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Finding the Fourth Proportional to 70,229.66, 96,916.92 and 38,398.55

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Solution

The fourth proportional to 70,229.66, 96,916.92 and 38,398.55 is: 52,989.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,229.66 : 96,916.92 = 38,398.55 : x
  2. Step 2: Convert to fraction form
    70,229.66/96,916.92 = 38,398.55/x
  3. Step 3: Cross multiply
    70,229.66x = 96,916.92 × 38,398.55
  4. Step 4: Simplify right side
    70,229.66x = 3,721,469,198.47
  5. Step 5: Solve for x
    x = 3,721,469,198.47/70,229.66
  6. Step 6: Final answer
    x = 52,989.99

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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.