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Finding the Third Proportional to 422 and 1,082

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Solution

The third proportional to 422 and 1,082 is: 2,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    422 : 1,082 = 1,082 : x
  2. Step 2: Convert to fraction form
    422/1,082 = 1,082/x
  3. Step 3: Cross multiply
    422x = 1,082 × 1,082
  4. Step 4: Simplify right side
    422x = 1,170,724
  5. Step 5: Solve for x
    x = 1,170,724/422
  6. Step 6: Final answer
    x = 2,774.23

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These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.