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Finding the Fourth Proportional to 5,791.12, 8,680.16 and 2,871.52

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Solution

The fourth proportional to 5,791.12, 8,680.16 and 2,871.52 is: 4,304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.12 : 8,680.16 = 2,871.52 : x
  2. Step 2: Convert to fraction form
    5,791.12/8,680.16 = 2,871.52/x
  3. Step 3: Cross multiply
    5,791.12x = 8,680.16 × 2,871.52
  4. Step 4: Simplify right side
    5,791.12x = 24,925,253.04
  5. Step 5: Solve for x
    x = 24,925,253.04/5,791.12
  6. Step 6: Final answer
    x = 4,304.05

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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.