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Finding the Fourth Proportional to 361,654.43, 499,099.31 and 206,619.28

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Solution

The fourth proportional to 361,654.43, 499,099.31 and 206,619.28 is: 285,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,654.43 : 499,099.31 = 206,619.28 : x
  2. Step 2: Convert to fraction form
    361,654.43/499,099.31 = 206,619.28/x
  3. Step 3: Cross multiply
    361,654.43x = 499,099.31 × 206,619.28
  4. Step 4: Simplify right side
    361,654.43x = 103,123,539,919.71
  5. Step 5: Solve for x
    x = 103,123,539,919.71/361,654.43
  6. Step 6: Final answer
    x = 285,143.86

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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.