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Finding the Fourth Proportional to 170,450.61, 255,675.78 and 45,791.61

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Solution

The fourth proportional to 170,450.61, 255,675.78 and 45,791.61 is: 68,687.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,450.61 : 255,675.78 = 45,791.61 : x
  2. Step 2: Convert to fraction form
    170,450.61/255,675.78 = 45,791.61/x
  3. Step 3: Cross multiply
    170,450.61x = 255,675.78 × 45,791.61
  4. Step 4: Simplify right side
    170,450.61x = 11,707,805,604.21
  5. Step 5: Solve for x
    x = 11,707,805,604.21/170,450.61
  6. Step 6: Final answer
    x = 68,687.38

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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.