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Finding the Third Proportional to 54,678.75 and 79,020.75

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Solution

The third proportional to 54,678.75 and 79,020.75 is: 114,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,678.75 : 79,020.75 = 79,020.75 : x
  2. Step 2: Convert to fraction form
    54,678.75/79,020.75 = 79,020.75/x
  3. Step 3: Cross multiply
    54,678.75x = 79,020.75 × 79,020.75
  4. Step 4: Simplify right side
    54,678.75x = 6,244,278,930.56
  5. Step 5: Solve for x
    x = 6,244,278,930.56/54,678.75
  6. Step 6: Final answer
    x = 114,199.37

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.