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Finding the Fourth Proportional to 11,379.38, 17,071.94 and 3,171.38

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Solution

The fourth proportional to 11,379.38, 17,071.94 and 3,171.38 is: 4,757.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.38 : 17,071.94 = 3,171.38 : x
  2. Step 2: Convert to fraction form
    11,379.38/17,071.94 = 3,171.38/x
  3. Step 3: Cross multiply
    11,379.38x = 17,071.94 × 3,171.38
  4. Step 4: Simplify right side
    11,379.38x = 54,141,531.65
  5. Step 5: Solve for x
    x = 54,141,531.65/11,379.38
  6. Step 6: Final answer
    x = 4,757.87

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