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Finding the Third Proportional to 21,969 and 33,261.75

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Solution

The third proportional to 21,969 and 33,261.75 is: 50,359.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969 : 33,261.75 = 33,261.75 : x
  2. Step 2: Convert to fraction form
    21,969/33,261.75 = 33,261.75/x
  3. Step 3: Cross multiply
    21,969x = 33,261.75 × 33,261.75
  4. Step 4: Simplify right side
    21,969x = 1,106,344,013.06
  5. Step 5: Solve for x
    x = 1,106,344,013.06/21,969
  6. Step 6: Final answer
    x = 50,359.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.