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Finding the Fourth Proportional to 62,919.28, 86,831 and 36,067

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Solution

The fourth proportional to 62,919.28, 86,831 and 36,067 is: 49,773.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,919.28 : 86,831 = 36,067 : x
  2. Step 2: Convert to fraction form
    62,919.28/86,831 = 36,067/x
  3. Step 3: Cross multiply
    62,919.28x = 86,831 × 36,067
  4. Step 4: Simplify right side
    62,919.28x = 3,131,733,677
  5. Step 5: Solve for x
    x = 3,131,733,677/62,919.28
  6. Step 6: Final answer
    x = 49,773.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.