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Finding the Fourth Proportional to 19,234.80, 28,713.15 and 17,791.92

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Solution

The fourth proportional to 19,234.80, 28,713.15 and 17,791.92 is: 26,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,234.80 : 28,713.15 = 17,791.92 : x
  2. Step 2: Convert to fraction form
    19,234.80/28,713.15 = 17,791.92/x
  3. Step 3: Cross multiply
    19,234.80x = 28,713.15 × 17,791.92
  4. Step 4: Simplify right side
    19,234.80x = 510,862,067.75
  5. Step 5: Solve for x
    x = 510,862,067.75/19,234.80
  6. Step 6: Final answer
    x = 26,559.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.