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Finding the Fourth Proportional to 396,545.63, 547,234.11 and 215,257.64

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Solution

The fourth proportional to 396,545.63, 547,234.11 and 215,257.64 is: 297,056.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,545.63 : 547,234.11 = 215,257.64 : x
  2. Step 2: Convert to fraction form
    396,545.63/547,234.11 = 215,257.64/x
  3. Step 3: Cross multiply
    396,545.63x = 547,234.11 × 215,257.64
  4. Step 4: Simplify right side
    396,545.63x = 117,796,320,309.93
  5. Step 5: Solve for x
    x = 117,796,320,309.93/396,545.63
  6. Step 6: Final answer
    x = 297,056.16

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1.5x scale

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.