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Finding the Fourth Proportional to 74,879.78, 112,343.97 and 22,289.72

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Solution

The fourth proportional to 74,879.78, 112,343.97 and 22,289.72 is: 33,441.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,879.78 : 112,343.97 = 22,289.72 : x
  2. Step 2: Convert to fraction form
    74,879.78/112,343.97 = 22,289.72/x
  3. Step 3: Cross multiply
    74,879.78x = 112,343.97 × 22,289.72
  4. Step 4: Simplify right side
    74,879.78x = 2,504,115,634.99
  5. Step 5: Solve for x
    x = 2,504,115,634.99/74,879.78
  6. Step 6: Final answer
    x = 33,441.81

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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.