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Finding the Fourth Proportional to 465,912.61, 641,372.68 and 344,825.71

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Solution

The fourth proportional to 465,912.61, 641,372.68 and 344,825.71 is: 474,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,912.61 : 641,372.68 = 344,825.71 : x
  2. Step 2: Convert to fraction form
    465,912.61/641,372.68 = 344,825.71/x
  3. Step 3: Cross multiply
    465,912.61x = 641,372.68 × 344,825.71
  4. Step 4: Simplify right side
    465,912.61x = 221,161,788,583.20
  5. Step 5: Solve for x
    x = 221,161,788,583.20/465,912.61
  6. Step 6: Final answer
    x = 474,685.13

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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.