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Finding the Fourth Proportional to 386,654.20, 580,207.10 and 161,995.44

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Solution

The fourth proportional to 386,654.20, 580,207.10 and 161,995.44 is: 243,087.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,654.20 : 580,207.10 = 161,995.44 : x
  2. Step 2: Convert to fraction form
    386,654.20/580,207.10 = 161,995.44/x
  3. Step 3: Cross multiply
    386,654.20x = 580,207.10 × 161,995.44
  4. Step 4: Simplify right side
    386,654.20x = 93,990,904,455.62
  5. Step 5: Solve for x
    x = 93,990,904,455.62/386,654.20
  6. Step 6: Final answer
    x = 243,087.76

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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.