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Finding the Fourth Proportional to 17,751.75, 26,613.59 and 8,862.51

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Solution

The fourth proportional to 17,751.75, 26,613.59 and 8,862.51 is: 13,286.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,751.75 : 26,613.59 = 8,862.51 : x
  2. Step 2: Convert to fraction form
    17,751.75/26,613.59 = 8,862.51/x
  3. Step 3: Cross multiply
    17,751.75x = 26,613.59 × 8,862.51
  4. Step 4: Simplify right side
    17,751.75x = 235,863,163.20
  5. Step 5: Solve for x
    x = 235,863,163.20/17,751.75
  6. Step 6: Final answer
    x = 13,286.76

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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.