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Finding the Third Proportional to 734.50 and 1,982

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Solution

The third proportional to 734.50 and 1,982 is: 5,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.50 : 1,982 = 1,982 : x
  2. Step 2: Convert to fraction form
    734.50/1,982 = 1,982/x
  3. Step 3: Cross multiply
    734.50x = 1,982 × 1,982
  4. Step 4: Simplify right side
    734.50x = 3,928,324
  5. Step 5: Solve for x
    x = 3,928,324/734.50
  6. Step 6: Final answer
    x = 5,348.30

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.