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Finding the Fourth Proportional to 18,531.26, 27,807.95 and 17,023.80

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Solution

The fourth proportional to 18,531.26, 27,807.95 and 17,023.80 is: 25,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.26 : 27,807.95 = 17,023.80 : x
  2. Step 2: Convert to fraction form
    18,531.26/27,807.95 = 17,023.80/x
  3. Step 3: Cross multiply
    18,531.26x = 27,807.95 × 17,023.80
  4. Step 4: Simplify right side
    18,531.26x = 473,397,021.77
  5. Step 5: Solve for x
    x = 473,397,021.77/18,531.26
  6. Step 6: Final answer
    x = 25,545.87

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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.