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Finding the Fourth Proportional to 396,674.43, 547,275.53 and 253,517.06

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Solution

The fourth proportional to 396,674.43, 547,275.53 and 253,517.06 is: 349,767.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,674.43 : 547,275.53 = 253,517.06 : x
  2. Step 2: Convert to fraction form
    396,674.43/547,275.53 = 253,517.06/x
  3. Step 3: Cross multiply
    396,674.43x = 547,275.53 × 253,517.06
  4. Step 4: Simplify right side
    396,674.43x = 138,743,680,639.16
  5. Step 5: Solve for x
    x = 138,743,680,639.16/396,674.43
  6. Step 6: Final answer
    x = 349,767.14

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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.