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Finding the Fourth Proportional to 27,259.88, 40,889.88 and 8,791.88

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Solution

The fourth proportional to 27,259.88, 40,889.88 and 8,791.88 is: 13,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,259.88 : 40,889.88 = 8,791.88 : x
  2. Step 2: Convert to fraction form
    27,259.88/40,889.88 = 8,791.88/x
  3. Step 3: Cross multiply
    27,259.88x = 40,889.88 × 8,791.88
  4. Step 4: Simplify right side
    27,259.88x = 359,498,713.73
  5. Step 5: Solve for x
    x = 359,498,713.73/27,259.88
  6. Step 6: Final answer
    x = 13,187.83

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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.