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Finding the Fourth Proportional to 168,628.73, 253,067.85 and 79,882.43

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Solution

The fourth proportional to 168,628.73, 253,067.85 and 79,882.43 is: 119,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,628.73 : 253,067.85 = 79,882.43 : x
  2. Step 2: Convert to fraction form
    168,628.73/253,067.85 = 79,882.43/x
  3. Step 3: Cross multiply
    168,628.73x = 253,067.85 × 79,882.43
  4. Step 4: Simplify right side
    168,628.73x = 20,215,673,547.54
  5. Step 5: Solve for x
    x = 20,215,673,547.54/168,628.73
  6. Step 6: Final answer
    x = 119,882.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.