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Finding the Fourth Proportional to 18,568.66, 27,862.17 and 8,708.69

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Solution

The fourth proportional to 18,568.66, 27,862.17 and 8,708.69 is: 13,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.66 : 27,862.17 = 8,708.69 : x
  2. Step 2: Convert to fraction form
    18,568.66/27,862.17 = 8,708.69/x
  3. Step 3: Cross multiply
    18,568.66x = 27,862.17 × 8,708.69
  4. Step 4: Simplify right side
    18,568.66x = 242,643,001.26
  5. Step 5: Solve for x
    x = 242,643,001.26/18,568.66
  6. Step 6: Final answer
    x = 13,067.34

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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.