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Finding the Fourth Proportional to 396,889.30, 547,691.52 and 235,740.10

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Solution

The fourth proportional to 396,889.30, 547,691.52 and 235,740.10 is: 325,312.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,889.30 : 547,691.52 = 235,740.10 : x
  2. Step 2: Convert to fraction form
    396,889.30/547,691.52 = 235,740.10/x
  3. Step 3: Cross multiply
    396,889.30x = 547,691.52 × 235,740.10
  4. Step 4: Simplify right side
    396,889.30x = 129,112,853,693.95
  5. Step 5: Solve for x
    x = 129,112,853,693.95/396,889.30
  6. Step 6: Final answer
    x = 325,312.00

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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.