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Finding the Third Proportional to 2,790 and 6,162

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Solution

The third proportional to 2,790 and 6,162 is: 13,609.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790 : 6,162 = 6,162 : x
  2. Step 2: Convert to fraction form
    2,790/6,162 = 6,162/x
  3. Step 3: Cross multiply
    2,790x = 6,162 × 6,162
  4. Step 4: Simplify right side
    2,790x = 37,970,244
  5. Step 5: Solve for x
    x = 37,970,244/2,790
  6. Step 6: Final answer
    x = 13,609.41

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.