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Finding the Third Proportional to 2,622 and 5,400

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Solution

The third proportional to 2,622 and 5,400 is: 11,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622 : 5,400 = 5,400 : x
  2. Step 2: Convert to fraction form
    2,622/5,400 = 5,400/x
  3. Step 3: Cross multiply
    2,622x = 5,400 × 5,400
  4. Step 4: Simplify right side
    2,622x = 29,160,000
  5. Step 5: Solve for x
    x = 29,160,000/2,622
  6. Step 6: Final answer
    x = 11,121.28

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.