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Finding the Third Proportional to 967 and 1,380

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Solution

The third proportional to 967 and 1,380 is: 1,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    967 : 1,380 = 1,380 : x
  2. Step 2: Convert to fraction form
    967/1,380 = 1,380/x
  3. Step 3: Cross multiply
    967x = 1,380 × 1,380
  4. Step 4: Simplify right side
    967x = 1,904,400
  5. Step 5: Solve for x
    x = 1,904,400/967
  6. Step 6: Final answer
    x = 1,969.39

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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.