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Finding the Third Proportional to 16,476.75 and 18,690.75

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Solution

The third proportional to 16,476.75 and 18,690.75 is: 21,202.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,476.75 : 18,690.75 = 18,690.75 : x
  2. Step 2: Convert to fraction form
    16,476.75/18,690.75 = 18,690.75/x
  3. Step 3: Cross multiply
    16,476.75x = 18,690.75 × 18,690.75
  4. Step 4: Simplify right side
    16,476.75x = 349,344,135.56
  5. Step 5: Solve for x
    x = 349,344,135.56/16,476.75
  6. Step 6: Final answer
    x = 21,202.25

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.