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Finding the Fourth Proportional to 5,721.86, 8,588.92 and 5,067.78

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Solution

The fourth proportional to 5,721.86, 8,588.92 and 5,067.78 is: 7,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.86 : 8,588.92 = 5,067.78 : x
  2. Step 2: Convert to fraction form
    5,721.86/8,588.92 = 5,067.78/x
  3. Step 3: Cross multiply
    5,721.86x = 8,588.92 × 5,067.78
  4. Step 4: Simplify right side
    5,721.86x = 43,526,757.00
  5. Step 5: Solve for x
    x = 43,526,757.00/5,721.86
  6. Step 6: Final answer
    x = 7,607.10

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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.