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Finding the Fourth Proportional to 396,369.57, 546,234.89 and 389,082.08

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Solution

The fourth proportional to 396,369.57, 546,234.89 and 389,082.08 is: 536,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,369.57 : 546,234.89 = 389,082.08 : x
  2. Step 2: Convert to fraction form
    396,369.57/546,234.89 = 389,082.08/x
  3. Step 3: Cross multiply
    396,369.57x = 546,234.89 × 389,082.08
  4. Step 4: Simplify right side
    396,369.57x = 212,530,202,493.19
  5. Step 5: Solve for x
    x = 212,530,202,493.19/396,369.57
  6. Step 6: Final answer
    x = 536,192.03

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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.