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Finding the Third Proportional to 622 and 1,110

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Solution

The third proportional to 622 and 1,110 is: 1,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    622 : 1,110 = 1,110 : x
  2. Step 2: Convert to fraction form
    622/1,110 = 1,110/x
  3. Step 3: Cross multiply
    622x = 1,110 × 1,110
  4. Step 4: Simplify right side
    622x = 1,232,100
  5. Step 5: Solve for x
    x = 1,232,100/622
  6. Step 6: Final answer
    x = 1,980.87

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.