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Finding the Third Proportional to 861 and 2,325

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Solution

The third proportional to 861 and 2,325 is: 6,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    861 : 2,325 = 2,325 : x
  2. Step 2: Convert to fraction form
    861/2,325 = 2,325/x
  3. Step 3: Cross multiply
    861x = 2,325 × 2,325
  4. Step 4: Simplify right side
    861x = 5,405,625
  5. Step 5: Solve for x
    x = 5,405,625/861
  6. Step 6: Final answer
    x = 6,278.31

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.