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Finding the Fourth Proportional to 275,467.20, 412,423.20 and 267,691.20

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Solution

The fourth proportional to 275,467.20, 412,423.20 and 267,691.20 is: 400,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,467.20 : 412,423.20 = 267,691.20 : x
  2. Step 2: Convert to fraction form
    275,467.20/412,423.20 = 267,691.20/x
  3. Step 3: Cross multiply
    275,467.20x = 412,423.20 × 267,691.20
  4. Step 4: Simplify right side
    275,467.20x = 110,402,061,315.84
  5. Step 5: Solve for x
    x = 110,402,061,315.84/275,467.20
  6. Step 6: Final answer
    x = 400,781.15

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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.