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Finding the Third Proportional to 744 and 1,418.25

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Solution

The third proportional to 744 and 1,418.25 is: 2,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    744 : 1,418.25 = 1,418.25 : x
  2. Step 2: Convert to fraction form
    744/1,418.25 = 1,418.25/x
  3. Step 3: Cross multiply
    744x = 1,418.25 × 1,418.25
  4. Step 4: Simplify right side
    744x = 2,011,433.06
  5. Step 5: Solve for x
    x = 2,011,433.06/744
  6. Step 6: Final answer
    x = 2,703.54

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.