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Finding the Third Proportional to 721 and 944.50

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Solution

The third proportional to 721 and 944.50 is: 1,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721 : 944.50 = 944.50 : x
  2. Step 2: Convert to fraction form
    721/944.50 = 944.50/x
  3. Step 3: Cross multiply
    721x = 944.50 × 944.50
  4. Step 4: Simplify right side
    721x = 892,080.25
  5. Step 5: Solve for x
    x = 892,080.25/721
  6. Step 6: Final answer
    x = 1,237.28

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.