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Finding the Fourth Proportional to 60,237.91, 90,285.18 and 45,397.90

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Solution

The fourth proportional to 60,237.91, 90,285.18 and 45,397.90 is: 68,042.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,237.91 : 90,285.18 = 45,397.90 : x
  2. Step 2: Convert to fraction form
    60,237.91/90,285.18 = 45,397.90/x
  3. Step 3: Cross multiply
    60,237.91x = 90,285.18 × 45,397.90
  4. Step 4: Simplify right side
    60,237.91x = 4,098,757,573.12
  5. Step 5: Solve for x
    x = 4,098,757,573.12/60,237.91
  6. Step 6: Final answer
    x = 68,042.83

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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.