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Finding the Third Proportional to 714 and 1,422

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Solution

The third proportional to 714 and 1,422 is: 2,832.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    714 : 1,422 = 1,422 : x
  2. Step 2: Convert to fraction form
    714/1,422 = 1,422/x
  3. Step 3: Cross multiply
    714x = 1,422 × 1,422
  4. Step 4: Simplify right side
    714x = 2,022,084
  5. Step 5: Solve for x
    x = 2,022,084/714
  6. Step 6: Final answer
    x = 2,832.05

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Why These Related Problems?

These problems maintain the same ratio (1.99) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.