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Finding the Fourth Proportional to 132,672.32, 198,801.12 and 76,546.88

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Solution

The fourth proportional to 132,672.32, 198,801.12 and 76,546.88 is: 114,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,672.32 : 198,801.12 = 76,546.88 : x
  2. Step 2: Convert to fraction form
    132,672.32/198,801.12 = 76,546.88/x
  3. Step 3: Cross multiply
    132,672.32x = 198,801.12 × 76,546.88
  4. Step 4: Simplify right side
    132,672.32x = 15,217,605,476.51
  5. Step 5: Solve for x
    x = 15,217,605,476.51/132,672.32
  6. Step 6: Final answer
    x = 114,700.68

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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.