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Finding the Third Proportional to 18,666.75 and 39,062.25

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Solution

The third proportional to 18,666.75 and 39,062.25 is: 81,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.75 : 39,062.25 = 39,062.25 : x
  2. Step 2: Convert to fraction form
    18,666.75/39,062.25 = 39,062.25/x
  3. Step 3: Cross multiply
    18,666.75x = 39,062.25 × 39,062.25
  4. Step 4: Simplify right side
    18,666.75x = 1,525,859,375.06
  5. Step 5: Solve for x
    x = 1,525,859,375.06/18,666.75
  6. Step 6: Final answer
    x = 81,742.10

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.