Home / 71,191,022,291.28-98,243,708,049.28-38,638,236,439.20

Finding the Fourth Proportional to 71,191,022,291.28, 98,243,708,049.28 and 38,638,236,439.20

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Solution

The fourth proportional to 71,191,022,291.28, 98,243,708,049.28 and 38,638,236,439.20 is: 53,320,819,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191,022,291.28 : 98,243,708,049.28 = 38,638,236,439.20 : x
  2. Step 2: Convert to fraction form
    71,191,022,291.28/98,243,708,049.28 = 38,638,236,439.20/x
  3. Step 3: Cross multiply
    71,191,022,291.28x = 98,243,708,049.28 × 38,638,236,439.20
  4. Step 4: Simplify right side
    71,191,022,291.28x = 3,795,963,620,271,816,441,856
  5. Step 5: Solve for x
    x = 3,795,963,620,271,816,441,856/71,191,022,291.28
  6. Step 6: Final answer
    x = 53,320,819,087.84

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Half scale
Find fourth proportional to 142,382,044,582.56, 196,487,416,098.56 and 77,276,472,878.40
Double scale
Find fourth proportional to 71,191,022,292.28, 98,243,708,050.66 and 38,638,236,440.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.