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Finding the Third Proportional to 768 and 1,367

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Solution

The third proportional to 768 and 1,367 is: 2,433.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768 : 1,367 = 1,367 : x
  2. Step 2: Convert to fraction form
    768/1,367 = 1,367/x
  3. Step 3: Cross multiply
    768x = 1,367 × 1,367
  4. Step 4: Simplify right side
    768x = 1,868,689
  5. Step 5: Solve for x
    x = 1,868,689/768
  6. Step 6: Final answer
    x = 2,433.19

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.