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Finding the Fourth Proportional to 83,861.92, 125,794.16 and 21,531.04

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Solution

The fourth proportional to 83,861.92, 125,794.16 and 21,531.04 is: 32,296.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,861.92 : 125,794.16 = 21,531.04 : x
  2. Step 2: Convert to fraction form
    83,861.92/125,794.16 = 21,531.04/x
  3. Step 3: Cross multiply
    83,861.92x = 125,794.16 × 21,531.04
  4. Step 4: Simplify right side
    83,861.92x = 2,708,479,090.73
  5. Step 5: Solve for x
    x = 2,708,479,090.73/83,861.92
  6. Step 6: Final answer
    x = 32,296.89

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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.