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Finding the Fourth Proportional to 87,615.60, 131,488.20 and 58,023.60

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Solution

The fourth proportional to 87,615.60, 131,488.20 and 58,023.60 is: 87,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,615.60 : 131,488.20 = 58,023.60 : x
  2. Step 2: Convert to fraction form
    87,615.60/131,488.20 = 58,023.60/x
  3. Step 3: Cross multiply
    87,615.60x = 131,488.20 × 58,023.60
  4. Step 4: Simplify right side
    87,615.60x = 7,629,418,721.52
  5. Step 5: Solve for x
    x = 7,629,418,721.52/87,615.60
  6. Step 6: Final answer
    x = 87,078.31

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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.