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Finding the Fourth Proportional to 74,478.56, 111,771.14 and 27,093.56

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Solution

The fourth proportional to 74,478.56, 111,771.14 and 27,093.56 is: 40,659.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,478.56 : 111,771.14 = 27,093.56 : x
  2. Step 2: Convert to fraction form
    74,478.56/111,771.14 = 27,093.56/x
  3. Step 3: Cross multiply
    74,478.56x = 111,771.14 × 27,093.56
  4. Step 4: Simplify right side
    74,478.56x = 3,028,278,087.86
  5. Step 5: Solve for x
    x = 3,028,278,087.86/74,478.56
  6. Step 6: Final answer
    x = 40,659.73

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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.