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Finding the Third Proportional to 980 and 1,996

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Solution

The third proportional to 980 and 1,996 is: 4,065.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    980 : 1,996 = 1,996 : x
  2. Step 2: Convert to fraction form
    980/1,996 = 1,996/x
  3. Step 3: Cross multiply
    980x = 1,996 × 1,996
  4. Step 4: Simplify right side
    980x = 3,984,016
  5. Step 5: Solve for x
    x = 3,984,016/980
  6. Step 6: Final answer
    x = 4,065.32

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.