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Finding the Third Proportional to 2,680.25 and 4,191.75

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Solution

The third proportional to 2,680.25 and 4,191.75 is: 6,555.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.25 : 4,191.75 = 4,191.75 : x
  2. Step 2: Convert to fraction form
    2,680.25/4,191.75 = 4,191.75/x
  3. Step 3: Cross multiply
    2,680.25x = 4,191.75 × 4,191.75
  4. Step 4: Simplify right side
    2,680.25x = 17,570,768.06
  5. Step 5: Solve for x
    x = 17,570,768.06/2,680.25
  6. Step 6: Final answer
    x = 6,555.65

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.