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Finding the Fourth Proportional to 396,502.12, 547,158.18 and 226,731.88

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Solution

The fourth proportional to 396,502.12, 547,158.18 and 226,731.88 is: 312,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,502.12 : 547,158.18 = 226,731.88 : x
  2. Step 2: Convert to fraction form
    396,502.12/547,158.18 = 226,731.88/x
  3. Step 3: Cross multiply
    396,502.12x = 547,158.18 × 226,731.88
  4. Step 4: Simplify right side
    396,502.12x = 124,058,202,808.78
  5. Step 5: Solve for x
    x = 124,058,202,808.78/396,502.12
  6. Step 6: Final answer
    x = 312,881.56

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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.