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Finding the Fourth Proportional to 5,791.75, 8,688.13 and 1,631.79

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Solution

The fourth proportional to 5,791.75, 8,688.13 and 1,631.79 is: 2,447.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.75 : 8,688.13 = 1,631.79 : x
  2. Step 2: Convert to fraction form
    5,791.75/8,688.13 = 1,631.79/x
  3. Step 3: Cross multiply
    5,791.75x = 8,688.13 × 1,631.79
  4. Step 4: Simplify right side
    5,791.75x = 14,177,203.65
  5. Step 5: Solve for x
    x = 14,177,203.65/5,791.75
  6. Step 6: Final answer
    x = 2,447.83

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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.