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Finding the Fourth Proportional to 591,912.92, 817,061.96 and 387,976.98

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Solution

The fourth proportional to 591,912.92, 817,061.96 and 387,976.98 is: 535,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,912.92 : 817,061.96 = 387,976.98 : x
  2. Step 2: Convert to fraction form
    591,912.92/817,061.96 = 387,976.98/x
  3. Step 3: Cross multiply
    591,912.92x = 817,061.96 × 387,976.98
  4. Step 4: Simplify right side
    591,912.92x = 317,001,229,773.80
  5. Step 5: Solve for x
    x = 317,001,229,773.80/591,912.92
  6. Step 6: Final answer
    x = 535,553.83

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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.