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Finding the Third Proportional to 21,189 and 46,634

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Solution

The third proportional to 21,189 and 46,634 is: 102,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189 : 46,634 = 46,634 : x
  2. Step 2: Convert to fraction form
    21,189/46,634 = 46,634/x
  3. Step 3: Cross multiply
    21,189x = 46,634 × 46,634
  4. Step 4: Simplify right side
    21,189x = 2,174,729,956
  5. Step 5: Solve for x
    x = 2,174,729,956/21,189
  6. Step 6: Final answer
    x = 102,634.86

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.