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Finding the Fourth Proportional to 396,313.20, 594,469.80 and 389,752.20

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Solution

The fourth proportional to 396,313.20, 594,469.80 and 389,752.20 is: 584,628.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,313.20 : 594,469.80 = 389,752.20 : x
  2. Step 2: Convert to fraction form
    396,313.20/594,469.80 = 389,752.20/x
  3. Step 3: Cross multiply
    396,313.20x = 594,469.80 × 389,752.20
  4. Step 4: Simplify right side
    396,313.20x = 231,695,912,383.56
  5. Step 5: Solve for x
    x = 231,695,912,383.56/396,313.20
  6. Step 6: Final answer
    x = 584,628.30

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Similar ratio
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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.