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Finding the Fourth Proportional to 132,356.72, 198,559.69 and 43,613.73

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Solution

The fourth proportional to 132,356.72, 198,559.69 and 43,613.73 is: 65,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,356.72 : 198,559.69 = 43,613.73 : x
  2. Step 2: Convert to fraction form
    132,356.72/198,559.69 = 43,613.73/x
  3. Step 3: Cross multiply
    132,356.72x = 198,559.69 × 43,613.73
  4. Step 4: Simplify right side
    132,356.72x = 8,659,928,708.54
  5. Step 5: Solve for x
    x = 8,659,928,708.54/132,356.72
  6. Step 6: Final answer
    x = 65,428.70

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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.