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Finding the Fourth Proportional to 267,720.85, 401,775.50 and 215,757.73

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Solution

The fourth proportional to 267,720.85, 401,775.50 and 215,757.73 is: 323,793.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,720.85 : 401,775.50 = 215,757.73 : x
  2. Step 2: Convert to fraction form
    267,720.85/401,775.50 = 215,757.73/x
  3. Step 3: Cross multiply
    267,720.85x = 401,775.50 × 215,757.73
  4. Step 4: Simplify right side
    267,720.85x = 86,686,169,849.62
  5. Step 5: Solve for x
    x = 86,686,169,849.62/267,720.85
  6. Step 6: Final answer
    x = 323,793.12

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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.