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Finding the Fourth Proportional to 83,125.90, 124,767.15 and 43,711.30

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Solution

The fourth proportional to 83,125.90, 124,767.15 and 43,711.30 is: 65,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,125.90 : 124,767.15 = 43,711.30 : x
  2. Step 2: Convert to fraction form
    83,125.90/124,767.15 = 43,711.30/x
  3. Step 3: Cross multiply
    83,125.90x = 124,767.15 × 43,711.30
  4. Step 4: Simplify right side
    83,125.90x = 5,453,734,323.80
  5. Step 5: Solve for x
    x = 5,453,734,323.80/83,125.90
  6. Step 6: Final answer
    x = 65,608.12

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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.