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Finding the Third Proportional to 1,908.84 and 4,227.75

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Solution

The third proportional to 1,908.84 and 4,227.75 is: 9,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.84 : 4,227.75 = 4,227.75 : x
  2. Step 2: Convert to fraction form
    1,908.84/4,227.75 = 4,227.75/x
  3. Step 3: Cross multiply
    1,908.84x = 4,227.75 × 4,227.75
  4. Step 4: Simplify right side
    1,908.84x = 17,873,870.06
  5. Step 5: Solve for x
    x = 17,873,870.06/1,908.84
  6. Step 6: Final answer
    x = 9,363.72

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.