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Finding the Third Proportional to 4,992.75 and 10,917

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Solution

The third proportional to 4,992.75 and 10,917 is: 23,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.75 : 10,917 = 10,917 : x
  2. Step 2: Convert to fraction form
    4,992.75/10,917 = 10,917/x
  3. Step 3: Cross multiply
    4,992.75x = 10,917 × 10,917
  4. Step 4: Simplify right side
    4,992.75x = 119,180,889
  5. Step 5: Solve for x
    x = 119,180,889/4,992.75
  6. Step 6: Final answer
    x = 23,870.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.