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Finding the Fourth Proportional to 132,062.40, 198,190.80 and 87,674.40

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Solution

The fourth proportional to 132,062.40, 198,190.80 and 87,674.40 is: 131,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,062.40 : 198,190.80 = 87,674.40 : x
  2. Step 2: Convert to fraction form
    132,062.40/198,190.80 = 87,674.40/x
  3. Step 3: Cross multiply
    132,062.40x = 198,190.80 × 87,674.40
  4. Step 4: Simplify right side
    132,062.40x = 17,376,259,475.52
  5. Step 5: Solve for x
    x = 17,376,259,475.52/132,062.40
  6. Step 6: Final answer
    x = 131,576.13

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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.