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Finding the Fourth Proportional to 223,940.89, 335,958.72 and 74,172.70

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Solution

The fourth proportional to 223,940.89, 335,958.72 and 74,172.70 is: 111,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,940.89 : 335,958.72 = 74,172.70 : x
  2. Step 2: Convert to fraction form
    223,940.89/335,958.72 = 74,172.70/x
  3. Step 3: Cross multiply
    223,940.89x = 335,958.72 × 74,172.70
  4. Step 4: Simplify right side
    223,940.89x = 24,918,965,350.94
  5. Step 5: Solve for x
    x = 24,918,965,350.94/223,940.89
  6. Step 6: Final answer
    x = 111,274.74

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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.