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Finding the Fourth Proportional to 352,005.20, 527,230.20 and 272,862.80

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Solution

The fourth proportional to 352,005.20, 527,230.20 and 272,862.80 is: 408,691.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,005.20 : 527,230.20 = 272,862.80 : x
  2. Step 2: Convert to fraction form
    352,005.20/527,230.20 = 272,862.80/x
  3. Step 3: Cross multiply
    352,005.20x = 527,230.20 × 272,862.80
  4. Step 4: Simplify right side
    352,005.20x = 143,861,508,616.56
  5. Step 5: Solve for x
    x = 143,861,508,616.56/352,005.20
  6. Step 6: Final answer
    x = 408,691.43

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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.