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Finding the Third Proportional to 2,189.75 and 5,064.13

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Solution

The third proportional to 2,189.75 and 5,064.13 is: 11,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.75 : 5,064.13 = 5,064.13 : x
  2. Step 2: Convert to fraction form
    2,189.75/5,064.13 = 5,064.13/x
  3. Step 3: Cross multiply
    2,189.75x = 5,064.13 × 5,064.13
  4. Step 4: Simplify right side
    2,189.75x = 25,645,362.02
  5. Step 5: Solve for x
    x = 25,645,362.02/2,189.75
  6. Step 6: Final answer
    x = 11,711.55

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.