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Finding the Third Proportional to 3,422 and 5,360

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Solution

The third proportional to 3,422 and 5,360 is: 8,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422 : 5,360 = 5,360 : x
  2. Step 2: Convert to fraction form
    3,422/5,360 = 5,360/x
  3. Step 3: Cross multiply
    3,422x = 5,360 × 5,360
  4. Step 4: Simplify right side
    3,422x = 28,729,600
  5. Step 5: Solve for x
    x = 28,729,600/3,422
  6. Step 6: Final answer
    x = 8,395.56

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.