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Finding the Fourth Proportional to 396,911.66, 547,735.88 and 215,622.14

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Solution

The fourth proportional to 396,911.66, 547,735.88 and 215,622.14 is: 297,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,911.66 : 547,735.88 = 215,622.14 : x
  2. Step 2: Convert to fraction form
    396,911.66/547,735.88 = 215,622.14/x
  3. Step 3: Cross multiply
    396,911.66x = 547,735.88 × 215,622.14
  4. Step 4: Simplify right side
    396,911.66x = 118,103,982,600.38
  5. Step 5: Solve for x
    x = 118,103,982,600.38/396,911.66
  6. Step 6: Final answer
    x = 297,557.35

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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.