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Finding the Fourth Proportional to 87,915.76, 131,891.86 and 35,329.34

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Solution

The fourth proportional to 87,915.76, 131,891.86 and 35,329.34 is: 53,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.76 : 131,891.86 = 35,329.34 : x
  2. Step 2: Convert to fraction form
    87,915.76/131,891.86 = 35,329.34/x
  3. Step 3: Cross multiply
    87,915.76x = 131,891.86 × 35,329.34
  4. Step 4: Simplify right side
    87,915.76x = 4,659,652,365.17
  5. Step 5: Solve for x
    x = 4,659,652,365.17/87,915.76
  6. Step 6: Final answer
    x = 53,001.33

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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.