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Finding the Third Proportional to 9,921.75 and 13,474.75

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Solution

The third proportional to 9,921.75 and 13,474.75 is: 18,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.75 : 13,474.75 = 13,474.75 : x
  2. Step 2: Convert to fraction form
    9,921.75/13,474.75 = 13,474.75/x
  3. Step 3: Cross multiply
    9,921.75x = 13,474.75 × 13,474.75
  4. Step 4: Simplify right side
    9,921.75x = 181,568,887.56
  5. Step 5: Solve for x
    x = 181,568,887.56/9,921.75
  6. Step 6: Final answer
    x = 18,300.09

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.