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Finding the Fourth Proportional to 62,472.25, 93,718.13 and 20,342.40

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Solution

The fourth proportional to 62,472.25, 93,718.13 and 20,342.40 is: 30,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,472.25 : 93,718.13 = 20,342.40 : x
  2. Step 2: Convert to fraction form
    62,472.25/93,718.13 = 20,342.40/x
  3. Step 3: Cross multiply
    62,472.25x = 93,718.13 × 20,342.40
  4. Step 4: Simplify right side
    62,472.25x = 1,906,451,687.71
  5. Step 5: Solve for x
    x = 1,906,451,687.71/62,472.25
  6. Step 6: Final answer
    x = 30,516.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.