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Finding the Fourth Proportional to 279,732.82, 386,174.25 and 189,565.18

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Solution

The fourth proportional to 279,732.82, 386,174.25 and 189,565.18 is: 261,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,732.82 : 386,174.25 = 189,565.18 : x
  2. Step 2: Convert to fraction form
    279,732.82/386,174.25 = 189,565.18/x
  3. Step 3: Cross multiply
    279,732.82x = 386,174.25 × 189,565.18
  4. Step 4: Simplify right side
    279,732.82x = 73,205,191,212.62
  5. Step 5: Solve for x
    x = 73,205,191,212.62/279,732.82
  6. Step 6: Final answer
    x = 261,696.83

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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.