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Finding the Third Proportional to 2,351.25 and 5,172.75

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Solution

The third proportional to 2,351.25 and 5,172.75 is: 11,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.25 : 5,172.75 = 5,172.75 : x
  2. Step 2: Convert to fraction form
    2,351.25/5,172.75 = 5,172.75/x
  3. Step 3: Cross multiply
    2,351.25x = 5,172.75 × 5,172.75
  4. Step 4: Simplify right side
    2,351.25x = 26,757,342.56
  5. Step 5: Solve for x
    x = 26,757,342.56/2,351.25
  6. Step 6: Final answer
    x = 11,380.05

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.