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Finding the Fourth Proportional to 202,142.20, 303,227.70 and 61,900.60

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Solution

The fourth proportional to 202,142.20, 303,227.70 and 61,900.60 is: 92,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,142.20 : 303,227.70 = 61,900.60 : x
  2. Step 2: Convert to fraction form
    202,142.20/303,227.70 = 61,900.60/x
  3. Step 3: Cross multiply
    202,142.20x = 303,227.70 × 61,900.60
  4. Step 4: Simplify right side
    202,142.20x = 18,769,976,566.62
  5. Step 5: Solve for x
    x = 18,769,976,566.62/202,142.20
  6. Step 6: Final answer
    x = 92,855.31

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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.