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Finding the Fourth Proportional to 87,424.60, 131,201.70 and 57,832.60

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Solution

The fourth proportional to 87,424.60, 131,201.70 and 57,832.60 is: 86,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,424.60 : 131,201.70 = 57,832.60 : x
  2. Step 2: Convert to fraction form
    87,424.60/131,201.70 = 57,832.60/x
  3. Step 3: Cross multiply
    87,424.60x = 131,201.70 × 57,832.60
  4. Step 4: Simplify right side
    87,424.60x = 7,587,735,435.42
  5. Step 5: Solve for x
    x = 7,587,735,435.42/87,424.60
  6. Step 6: Final answer
    x = 86,791.77

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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.