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Finding the Fourth Proportional to 396,874.20, 595,311.30 and 263,321.40

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Solution

The fourth proportional to 396,874.20, 595,311.30 and 263,321.40 is: 394,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,874.20 : 595,311.30 = 263,321.40 : x
  2. Step 2: Convert to fraction form
    396,874.20/595,311.30 = 263,321.40/x
  3. Step 3: Cross multiply
    396,874.20x = 595,311.30 × 263,321.40
  4. Step 4: Simplify right side
    396,874.20x = 156,758,204,951.82
  5. Step 5: Solve for x
    x = 156,758,204,951.82/396,874.20
  6. Step 6: Final answer
    x = 394,982.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.