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Finding the Third Proportional to 13,167 and 21,228.75

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Solution

The third proportional to 13,167 and 21,228.75 is: 34,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167 : 21,228.75 = 21,228.75 : x
  2. Step 2: Convert to fraction form
    13,167/21,228.75 = 21,228.75/x
  3. Step 3: Cross multiply
    13,167x = 21,228.75 × 21,228.75
  4. Step 4: Simplify right side
    13,167x = 450,659,826.56
  5. Step 5: Solve for x
    x = 450,659,826.56/13,167
  6. Step 6: Final answer
    x = 34,226.46

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.