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Finding the Third Proportional to 980 and 1,704

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Solution

The third proportional to 980 and 1,704 is: 2,962.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    980 : 1,704 = 1,704 : x
  2. Step 2: Convert to fraction form
    980/1,704 = 1,704/x
  3. Step 3: Cross multiply
    980x = 1,704 × 1,704
  4. Step 4: Simplify right side
    980x = 2,903,616
  5. Step 5: Solve for x
    x = 2,903,616/980
  6. Step 6: Final answer
    x = 2,962.87

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.