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Finding the Third Proportional to 17,318.25 and 26,991

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Solution

The third proportional to 17,318.25 and 26,991 is: 42,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,318.25 : 26,991 = 26,991 : x
  2. Step 2: Convert to fraction form
    17,318.25/26,991 = 26,991/x
  3. Step 3: Cross multiply
    17,318.25x = 26,991 × 26,991
  4. Step 4: Simplify right side
    17,318.25x = 728,514,081
  5. Step 5: Solve for x
    x = 728,514,081/17,318.25
  6. Step 6: Final answer
    x = 42,066.26

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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.