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Finding the Third Proportional to 2,817 and 4,227

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Solution

The third proportional to 2,817 and 4,227 is: 6,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817 : 4,227 = 4,227 : x
  2. Step 2: Convert to fraction form
    2,817/4,227 = 4,227/x
  3. Step 3: Cross multiply
    2,817x = 4,227 × 4,227
  4. Step 4: Simplify right side
    2,817x = 17,867,529
  5. Step 5: Solve for x
    x = 17,867,529/2,817
  6. Step 6: Final answer
    x = 6,342.75

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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.