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Finding the Fourth Proportional to 3,481.92, 5,222.88 and 849.42

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Solution

The fourth proportional to 3,481.92, 5,222.88 and 849.42 is: 1,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.92 : 5,222.88 = 849.42 : x
  2. Step 2: Convert to fraction form
    3,481.92/5,222.88 = 849.42/x
  3. Step 3: Cross multiply
    3,481.92x = 5,222.88 × 849.42
  4. Step 4: Simplify right side
    3,481.92x = 4,436,418.73
  5. Step 5: Solve for x
    x = 4,436,418.73/3,481.92
  6. Step 6: Final answer
    x = 1,274.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.