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Finding the Fourth Proportional to 87,577.92, 131,137.92 and 75,176.64

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Solution

The fourth proportional to 87,577.92, 131,137.92 and 75,176.64 is: 112,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,577.92 : 131,137.92 = 75,176.64 : x
  2. Step 2: Convert to fraction form
    87,577.92/131,137.92 = 75,176.64/x
  3. Step 3: Cross multiply
    87,577.92x = 131,137.92 × 75,176.64
  4. Step 4: Simplify right side
    87,577.92x = 9,858,508,202.19
  5. Step 5: Solve for x
    x = 9,858,508,202.19/87,577.92
  6. Step 6: Final answer
    x = 112,568.42

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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.