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Finding the Fourth Proportional to 581,517.27, 871,385.60 and 391,272.97

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Solution

The fourth proportional to 581,517.27, 871,385.60 and 391,272.97 is: 586,310.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,517.27 : 871,385.60 = 391,272.97 : x
  2. Step 2: Convert to fraction form
    581,517.27/871,385.60 = 391,272.97/x
  3. Step 3: Cross multiply
    581,517.27x = 871,385.60 × 391,272.97
  4. Step 4: Simplify right side
    581,517.27x = 340,949,631,727.23
  5. Step 5: Solve for x
    x = 340,949,631,727.23/581,517.27
  6. Step 6: Final answer
    x = 586,310.41

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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.