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Finding the Third Proportional to 5,560 and 7,722

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Solution

The third proportional to 5,560 and 7,722 is: 10,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,560 : 7,722 = 7,722 : x
  2. Step 2: Convert to fraction form
    5,560/7,722 = 7,722/x
  3. Step 3: Cross multiply
    5,560x = 7,722 × 7,722
  4. Step 4: Simplify right side
    5,560x = 59,629,284
  5. Step 5: Solve for x
    x = 59,629,284/5,560
  6. Step 6: Final answer
    x = 10,724.69

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.