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Finding the Fourth Proportional to 131,793.44, 181,874.12 and 71,362.80

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Solution

The fourth proportional to 131,793.44, 181,874.12 and 71,362.80 is: 98,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,793.44 : 181,874.12 = 71,362.80 : x
  2. Step 2: Convert to fraction form
    131,793.44/181,874.12 = 71,362.80/x
  3. Step 3: Cross multiply
    131,793.44x = 181,874.12 × 71,362.80
  4. Step 4: Simplify right side
    131,793.44x = 12,979,046,093.92
  5. Step 5: Solve for x
    x = 12,979,046,093.92/131,793.44
  6. Step 6: Final answer
    x = 98,480.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.