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Finding the Fourth Proportional to 70,049.61, 96,668.78 and 38,219.18

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Solution

The fourth proportional to 70,049.61, 96,668.78 and 38,219.18 is: 52,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,049.61 : 96,668.78 = 38,219.18 : x
  2. Step 2: Convert to fraction form
    70,049.61/96,668.78 = 38,219.18/x
  3. Step 3: Cross multiply
    70,049.61x = 96,668.78 × 38,219.18
  4. Step 4: Simplify right side
    70,049.61x = 3,694,600,828.76
  5. Step 5: Solve for x
    x = 3,694,600,828.76/70,049.61
  6. Step 6: Final answer
    x = 52,742.63

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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.