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Finding the Third Proportional to 799.50 and 1,722

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Solution

The third proportional to 799.50 and 1,722 is: 3,708.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.50 : 1,722 = 1,722 : x
  2. Step 2: Convert to fraction form
    799.50/1,722 = 1,722/x
  3. Step 3: Cross multiply
    799.50x = 1,722 × 1,722
  4. Step 4: Simplify right side
    799.50x = 2,965,284
  5. Step 5: Solve for x
    x = 2,965,284/799.50
  6. Step 6: Final answer
    x = 3,708.92

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.