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Finding the Fourth Proportional to 396,643.73, 547,819.02 and 267,359.22

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Solution

The fourth proportional to 396,643.73, 547,819.02 and 267,359.22 is: 369,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,643.73 : 547,819.02 = 267,359.22 : x
  2. Step 2: Convert to fraction form
    396,643.73/547,819.02 = 267,359.22/x
  3. Step 3: Cross multiply
    396,643.73x = 547,819.02 × 267,359.22
  4. Step 4: Simplify right side
    396,643.73x = 146,464,465,888.36
  5. Step 5: Solve for x
    x = 146,464,465,888.36/396,643.73
  6. Step 6: Final answer
    x = 369,259.51

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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.