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Finding the Third Proportional to 722.44 and 1,091.25

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Solution

The third proportional to 722.44 and 1,091.25 is: 1,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.44 : 1,091.25 = 1,091.25 : x
  2. Step 2: Convert to fraction form
    722.44/1,091.25 = 1,091.25/x
  3. Step 3: Cross multiply
    722.44x = 1,091.25 × 1,091.25
  4. Step 4: Simplify right side
    722.44x = 1,190,826.56
  5. Step 5: Solve for x
    x = 1,190,826.56/722.44
  6. Step 6: Final answer
    x = 1,648.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.