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Finding the Fourth Proportional to 71,591.04, 98,792.87 and 39,761.96

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Solution

The fourth proportional to 71,591.04, 98,792.87 and 39,761.96 is: 54,869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,591.04 : 98,792.87 = 39,761.96 : x
  2. Step 2: Convert to fraction form
    71,591.04/98,792.87 = 39,761.96/x
  3. Step 3: Cross multiply
    71,591.04x = 98,792.87 × 39,761.96
  4. Step 4: Simplify right side
    71,591.04x = 3,928,197,452.45
  5. Step 5: Solve for x
    x = 3,928,197,452.45/71,591.04
  6. Step 6: Final answer
    x = 54,869.96

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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.