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Finding the Third Proportional to 919.25 and 1,966.75

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Solution

The third proportional to 919.25 and 1,966.75 is: 4,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    919.25 : 1,966.75 = 1,966.75 : x
  2. Step 2: Convert to fraction form
    919.25/1,966.75 = 1,966.75/x
  3. Step 3: Cross multiply
    919.25x = 1,966.75 × 1,966.75
  4. Step 4: Simplify right side
    919.25x = 3,868,105.56
  5. Step 5: Solve for x
    x = 3,868,105.56/919.25
  6. Step 6: Final answer
    x = 4,207.89

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.