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Finding the Fourth Proportional to 17,672.33, 26,512.85 and 8,791.87

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Solution

The fourth proportional to 17,672.33, 26,512.85 and 8,791.87 is: 13,189.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,672.33 : 26,512.85 = 8,791.87 : x
  2. Step 2: Convert to fraction form
    17,672.33/26,512.85 = 8,791.87/x
  3. Step 3: Cross multiply
    17,672.33x = 26,512.85 × 8,791.87
  4. Step 4: Simplify right side
    17,672.33x = 233,097,486.57
  5. Step 5: Solve for x
    x = 233,097,486.57/17,672.33
  6. Step 6: Final answer
    x = 13,189.97

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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.