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Finding the Fourth Proportional to 396,734.91, 547,661.76 and 267,847.95

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Solution

The fourth proportional to 396,734.91, 547,661.76 and 267,847.95 is: 369,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,734.91 : 547,661.76 = 267,847.95 : x
  2. Step 2: Convert to fraction form
    396,734.91/547,661.76 = 267,847.95/x
  3. Step 3: Cross multiply
    396,734.91x = 547,661.76 × 267,847.95
  4. Step 4: Simplify right side
    396,734.91x = 146,690,079,709.39
  5. Step 5: Solve for x
    x = 146,690,079,709.39/396,734.91
  6. Step 6: Final answer
    x = 369,743.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.