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Finding the Third Proportional to 4,759 and 10,220

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Solution

The third proportional to 4,759 and 10,220 is: 21,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759 : 10,220 = 10,220 : x
  2. Step 2: Convert to fraction form
    4,759/10,220 = 10,220/x
  3. Step 3: Cross multiply
    4,759x = 10,220 × 10,220
  4. Step 4: Simplify right side
    4,759x = 104,448,400
  5. Step 5: Solve for x
    x = 104,448,400/4,759
  6. Step 6: Final answer
    x = 21,947.55

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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.