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Finding the Third Proportional to 732.50 and 1,242.75

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Solution

The third proportional to 732.50 and 1,242.75 is: 2,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.50 : 1,242.75 = 1,242.75 : x
  2. Step 2: Convert to fraction form
    732.50/1,242.75 = 1,242.75/x
  3. Step 3: Cross multiply
    732.50x = 1,242.75 × 1,242.75
  4. Step 4: Simplify right side
    732.50x = 1,544,427.56
  5. Step 5: Solve for x
    x = 1,544,427.56/732.50
  6. Step 6: Final answer
    x = 2,108.43

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.