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Finding the Fourth Proportional to 132,396.40, 198,691.80 and 88,008.40

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Solution

The fourth proportional to 132,396.40, 198,691.80 and 88,008.40 is: 132,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,396.40 : 198,691.80 = 88,008.40 : x
  2. Step 2: Convert to fraction form
    132,396.40/198,691.80 = 88,008.40/x
  3. Step 3: Cross multiply
    132,396.40x = 198,691.80 × 88,008.40
  4. Step 4: Simplify right side
    132,396.40x = 17,486,547,411.12
  5. Step 5: Solve for x
    x = 17,486,547,411.12/132,396.40
  6. Step 6: Final answer
    x = 132,077.21

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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.