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Finding the Fourth Proportional to 22,589.69, 31,163.85 and 15,879.65

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Solution

The fourth proportional to 22,589.69, 31,163.85 and 15,879.65 is: 21,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,589.69 : 31,163.85 = 15,879.65 : x
  2. Step 2: Convert to fraction form
    22,589.69/31,163.85 = 15,879.65/x
  3. Step 3: Cross multiply
    22,589.69x = 31,163.85 × 15,879.65
  4. Step 4: Simplify right side
    22,589.69x = 494,870,874.83
  5. Step 5: Solve for x
    x = 494,870,874.83/22,589.69
  6. Step 6: Final answer
    x = 21,906.94

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