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Finding the Third Proportional to 4,022 and 6,688

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Solution

The third proportional to 4,022 and 6,688 is: 11,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,022 : 6,688 = 6,688 : x
  2. Step 2: Convert to fraction form
    4,022/6,688 = 6,688/x
  3. Step 3: Cross multiply
    4,022x = 6,688 × 6,688
  4. Step 4: Simplify right side
    4,022x = 44,729,344
  5. Step 5: Solve for x
    x = 44,729,344/4,022
  6. Step 6: Final answer
    x = 11,121.17

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.