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Finding the Fourth Proportional to 11,951.12, 17,926.68 and 5,375.54

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Solution

The fourth proportional to 11,951.12, 17,926.68 and 5,375.54 is: 8,063.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.12 : 17,926.68 = 5,375.54 : x
  2. Step 2: Convert to fraction form
    11,951.12/17,926.68 = 5,375.54/x
  3. Step 3: Cross multiply
    11,951.12x = 17,926.68 × 5,375.54
  4. Step 4: Simplify right side
    11,951.12x = 96,365,650.38
  5. Step 5: Solve for x
    x = 96,365,650.38/11,951.12
  6. Step 6: Final answer
    x = 8,063.31

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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.