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Finding the Fourth Proportional to 396,456.57, 547,114.01 and 215,170.11

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Solution

The fourth proportional to 396,456.57, 547,114.01 and 215,170.11 is: 296,936.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,456.57 : 547,114.01 = 215,170.11 : x
  2. Step 2: Convert to fraction form
    396,456.57/547,114.01 = 215,170.11/x
  3. Step 3: Cross multiply
    396,456.57x = 547,114.01 × 215,170.11
  4. Step 4: Simplify right side
    396,456.57x = 117,722,580,638.39
  5. Step 5: Solve for x
    x = 117,722,580,638.39/396,456.57
  6. Step 6: Final answer
    x = 296,936.89

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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.