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Finding the Fourth Proportional to 11,375.52, 17,061.60 and 3,979.44

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Solution

The fourth proportional to 11,375.52, 17,061.60 and 3,979.44 is: 5,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.52 : 17,061.60 = 3,979.44 : x
  2. Step 2: Convert to fraction form
    11,375.52/17,061.60 = 3,979.44/x
  3. Step 3: Cross multiply
    11,375.52x = 17,061.60 × 3,979.44
  4. Step 4: Simplify right side
    11,375.52x = 67,895,613.50
  5. Step 5: Solve for x
    x = 67,895,613.50/11,375.52
  6. Step 6: Final answer
    x = 5,968.57

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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.