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Finding the Third Proportional to 4,791 and 10,311

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Solution

The third proportional to 4,791 and 10,311 is: 22,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791 : 10,311 = 10,311 : x
  2. Step 2: Convert to fraction form
    4,791/10,311 = 10,311/x
  3. Step 3: Cross multiply
    4,791x = 10,311 × 10,311
  4. Step 4: Simplify right side
    4,791x = 106,316,721
  5. Step 5: Solve for x
    x = 106,316,721/4,791
  6. Step 6: Final answer
    x = 22,190.92

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.