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Finding the Fourth Proportional to 132,481.66, 199,123.96 and 87,655.92

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Solution

The fourth proportional to 132,481.66, 199,123.96 and 87,655.92 is: 131,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,481.66 : 199,123.96 = 87,655.92 : x
  2. Step 2: Convert to fraction form
    132,481.66/199,123.96 = 87,655.92/x
  3. Step 3: Cross multiply
    132,481.66x = 199,123.96 × 87,655.92
  4. Step 4: Simplify right side
    132,481.66x = 17,454,393,907.84
  5. Step 5: Solve for x
    x = 17,454,393,907.84/132,481.66
  6. Step 6: Final answer
    x = 131,749.51

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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.