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Finding the Fourth Proportional to 396,061.88, 546,599.96 and 217,248.44

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Solution

The fourth proportional to 396,061.88, 546,599.96 and 217,248.44 is: 299,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,061.88 : 546,599.96 = 217,248.44 : x
  2. Step 2: Convert to fraction form
    396,061.88/546,599.96 = 217,248.44/x
  3. Step 3: Cross multiply
    396,061.88x = 546,599.96 × 217,248.44
  4. Step 4: Simplify right side
    396,061.88x = 118,747,984,794.82
  5. Step 5: Solve for x
    x = 118,747,984,794.82/396,061.88
  6. Step 6: Final answer
    x = 299,821.80

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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.