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Finding the Fourth Proportional to 83,791.06, 125,647.04 and 30,445.41

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Solution

The fourth proportional to 83,791.06, 125,647.04 and 30,445.41 is: 45,653.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,791.06 : 125,647.04 = 30,445.41 : x
  2. Step 2: Convert to fraction form
    83,791.06/125,647.04 = 30,445.41/x
  3. Step 3: Cross multiply
    83,791.06x = 125,647.04 × 30,445.41
  4. Step 4: Simplify right side
    83,791.06x = 3,825,375,648.09
  5. Step 5: Solve for x
    x = 3,825,375,648.09/83,791.06
  6. Step 6: Final answer
    x = 45,653.74

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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.