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Finding the Fourth Proportional to 15,791.20, 23,674.65 and 8,865.70

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Solution

The fourth proportional to 15,791.20, 23,674.65 and 8,865.70 is: 13,291.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.20 : 23,674.65 = 8,865.70 : x
  2. Step 2: Convert to fraction form
    15,791.20/23,674.65 = 8,865.70/x
  3. Step 3: Cross multiply
    15,791.20x = 23,674.65 × 8,865.70
  4. Step 4: Simplify right side
    15,791.20x = 209,892,344.51
  5. Step 5: Solve for x
    x = 209,892,344.51/15,791.20
  6. Step 6: Final answer
    x = 13,291.73

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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.