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Finding the Fourth Proportional to 50,751.60, 76,129.56 and 15,691.92

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Solution

The fourth proportional to 50,751.60, 76,129.56 and 15,691.92 is: 23,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,751.60 : 76,129.56 = 15,691.92 : x
  2. Step 2: Convert to fraction form
    50,751.60/76,129.56 = 15,691.92/x
  3. Step 3: Cross multiply
    50,751.60x = 76,129.56 × 15,691.92
  4. Step 4: Simplify right side
    50,751.60x = 1,194,618,965.16
  5. Step 5: Solve for x
    x = 1,194,618,965.16/50,751.60
  6. Step 6: Final answer
    x = 23,538.55

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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.