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Finding the Fourth Proportional to 73,194.88, 109,782.60 and 20,608.90

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Solution

The fourth proportional to 73,194.88, 109,782.60 and 20,608.90 is: 30,910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,194.88 : 109,782.60 = 20,608.90 : x
  2. Step 2: Convert to fraction form
    73,194.88/109,782.60 = 20,608.90/x
  3. Step 3: Cross multiply
    73,194.88x = 109,782.60 × 20,608.90
  4. Step 4: Simplify right side
    73,194.88x = 2,262,498,625.14
  5. Step 5: Solve for x
    x = 2,262,498,625.14/73,194.88
  6. Step 6: Final answer
    x = 30,910.61

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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.