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Finding the Fourth Proportional to 27,379.20, 41,065.23 and 8,661.12

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Solution

The fourth proportional to 27,379.20, 41,065.23 and 8,661.12 is: 12,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,379.20 : 41,065.23 = 8,661.12 : x
  2. Step 2: Convert to fraction form
    27,379.20/41,065.23 = 8,661.12/x
  3. Step 3: Cross multiply
    27,379.20x = 41,065.23 × 8,661.12
  4. Step 4: Simplify right side
    27,379.20x = 355,670,884.86
  5. Step 5: Solve for x
    x = 355,670,884.86/27,379.20
  6. Step 6: Final answer
    x = 12,990.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.