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Finding the Fourth Proportional to 70,395.28, 97,144.56 and 38,562.24

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Solution

The fourth proportional to 70,395.28, 97,144.56 and 38,562.24 is: 53,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,395.28 : 97,144.56 = 38,562.24 : x
  2. Step 2: Convert to fraction form
    70,395.28/97,144.56 = 38,562.24/x
  3. Step 3: Cross multiply
    70,395.28x = 97,144.56 × 38,562.24
  4. Step 4: Simplify right side
    70,395.28x = 3,746,111,837.41
  5. Step 5: Solve for x
    x = 3,746,111,837.41/70,395.28
  6. Step 6: Final answer
    x = 53,215.38

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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.