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Finding the Third Proportional to 756 and 1,082

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Solution

The third proportional to 756 and 1,082 is: 1,548.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    756 : 1,082 = 1,082 : x
  2. Step 2: Convert to fraction form
    756/1,082 = 1,082/x
  3. Step 3: Cross multiply
    756x = 1,082 × 1,082
  4. Step 4: Simplify right side
    756x = 1,170,724
  5. Step 5: Solve for x
    x = 1,170,724/756
  6. Step 6: Final answer
    x = 1,548.58

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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.