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Finding the Third Proportional to 21,696.75 and 47,241

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Solution

The third proportional to 21,696.75 and 47,241 is: 102,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696.75 : 47,241 = 47,241 : x
  2. Step 2: Convert to fraction form
    21,696.75/47,241 = 47,241/x
  3. Step 3: Cross multiply
    21,696.75x = 47,241 × 47,241
  4. Step 4: Simplify right side
    21,696.75x = 2,231,712,081
  5. Step 5: Solve for x
    x = 2,231,712,081/21,696.75
  6. Step 6: Final answer
    x = 102,859.28

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.