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Finding the Third Proportional to 1,268.16 and 1,964.25

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Solution

The third proportional to 1,268.16 and 1,964.25 is: 3,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.16 : 1,964.25 = 1,964.25 : x
  2. Step 2: Convert to fraction form
    1,268.16/1,964.25 = 1,964.25/x
  3. Step 3: Cross multiply
    1,268.16x = 1,964.25 × 1,964.25
  4. Step 4: Simplify right side
    1,268.16x = 3,858,278.06
  5. Step 5: Solve for x
    x = 3,858,278.06/1,268.16
  6. Step 6: Final answer
    x = 3,042.43

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.