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Finding the Third Proportional to 4,890 and 10,751

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Solution

The third proportional to 4,890 and 10,751 is: 23,636.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890 : 10,751 = 10,751 : x
  2. Step 2: Convert to fraction form
    4,890/10,751 = 10,751/x
  3. Step 3: Cross multiply
    4,890x = 10,751 × 10,751
  4. Step 4: Simplify right side
    4,890x = 115,584,001
  5. Step 5: Solve for x
    x = 115,584,001/4,890
  6. Step 6: Final answer
    x = 23,636.81

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.