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Finding the Fourth Proportional to 220,984.80, 331,416.60 and 61,022.52

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Solution

The fourth proportional to 220,984.80, 331,416.60 and 61,022.52 is: 91,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,984.80 : 331,416.60 = 61,022.52 : x
  2. Step 2: Convert to fraction form
    220,984.80/331,416.60 = 61,022.52/x
  3. Step 3: Cross multiply
    220,984.80x = 331,416.60 × 61,022.52
  4. Step 4: Simplify right side
    220,984.80x = 20,223,876,101.83
  5. Step 5: Solve for x
    x = 20,223,876,101.83/220,984.80
  6. Step 6: Final answer
    x = 91,517.05

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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.