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Finding the Fourth Proportional to 22,486.44, 33,723.78 and 6,687.21

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Solution

The fourth proportional to 22,486.44, 33,723.78 and 6,687.21 is: 10,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,486.44 : 33,723.78 = 6,687.21 : x
  2. Step 2: Convert to fraction form
    22,486.44/33,723.78 = 6,687.21/x
  3. Step 3: Cross multiply
    22,486.44x = 33,723.78 × 6,687.21
  4. Step 4: Simplify right side
    22,486.44x = 225,517,998.85
  5. Step 5: Solve for x
    x = 225,517,998.85/22,486.44
  6. Step 6: Final answer
    x = 10,029.07

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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.