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Finding the Fourth Proportional to 87,627.87, 120,851.96 and 74,081.97

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Solution

The fourth proportional to 87,627.87, 120,851.96 and 74,081.97 is: 102,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627.87 : 120,851.96 = 74,081.97 : x
  2. Step 2: Convert to fraction form
    87,627.87/120,851.96 = 74,081.97/x
  3. Step 3: Cross multiply
    87,627.87x = 120,851.96 × 74,081.97
  4. Step 4: Simplify right side
    87,627.87x = 8,952,950,904.75
  5. Step 5: Solve for x
    x = 8,952,950,904.75/87,627.87
  6. Step 6: Final answer
    x = 102,170.13

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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.