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Finding the Fourth Proportional to 83,591.78, 125,430.70 and 55,531.14

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Solution

The fourth proportional to 83,591.78, 125,430.70 and 55,531.14 is: 83,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,591.78 : 125,430.70 = 55,531.14 : x
  2. Step 2: Convert to fraction form
    83,591.78/125,430.70 = 55,531.14/x
  3. Step 3: Cross multiply
    83,591.78x = 125,430.70 × 55,531.14
  4. Step 4: Simplify right side
    83,591.78x = 6,965,309,762.00
  5. Step 5: Solve for x
    x = 6,965,309,762.00/83,591.78
  6. Step 6: Final answer
    x = 83,325.30

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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.