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Finding the Third Proportional to 15,369.75 and 19,936.13

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Solution

The third proportional to 15,369.75 and 19,936.13 is: 25,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.75 : 19,936.13 = 19,936.13 : x
  2. Step 2: Convert to fraction form
    15,369.75/19,936.13 = 19,936.13/x
  3. Step 3: Cross multiply
    15,369.75x = 19,936.13 × 19,936.13
  4. Step 4: Simplify right side
    15,369.75x = 397,449,080.02
  5. Step 5: Solve for x
    x = 397,449,080.02/15,369.75
  6. Step 6: Final answer
    x = 25,859.18

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.