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Finding the Third Proportional to 2,212.31 and 4,721.06

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Solution

The third proportional to 2,212.31 and 4,721.06 is: 10,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.31 : 4,721.06 = 4,721.06 : x
  2. Step 2: Convert to fraction form
    2,212.31/4,721.06 = 4,721.06/x
  3. Step 3: Cross multiply
    2,212.31x = 4,721.06 × 4,721.06
  4. Step 4: Simplify right side
    2,212.31x = 22,288,431.13
  5. Step 5: Solve for x
    x = 22,288,431.13/2,212.31
  6. Step 6: Final answer
    x = 10,074.72

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.