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Finding the Third Proportional to 5,711.25 and 8,149.50

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Solution

The third proportional to 5,711.25 and 8,149.50 is: 11,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.25 : 8,149.50 = 8,149.50 : x
  2. Step 2: Convert to fraction form
    5,711.25/8,149.50 = 8,149.50/x
  3. Step 3: Cross multiply
    5,711.25x = 8,149.50 × 8,149.50
  4. Step 4: Simplify right side
    5,711.25x = 66,414,350.25
  5. Step 5: Solve for x
    x = 66,414,350.25/5,711.25
  6. Step 6: Final answer
    x = 11,628.69

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.