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Finding the Fourth Proportional to 71,791.92, 99,084.60 and 41,590.80

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Solution

The fourth proportional to 71,791.92, 99,084.60 and 41,590.80 is: 57,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,791.92 : 99,084.60 = 41,590.80 : x
  2. Step 2: Convert to fraction form
    71,791.92/99,084.60 = 41,590.80/x
  3. Step 3: Cross multiply
    71,791.92x = 99,084.60 × 41,590.80
  4. Step 4: Simplify right side
    71,791.92x = 4,121,007,781.68
  5. Step 5: Solve for x
    x = 4,121,007,781.68/71,791.92
  6. Step 6: Final answer
    x = 57,402.11

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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.