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Finding the Fourth Proportional to 78,481.44, 108,288.90 and 44,027.28

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Solution

The fourth proportional to 78,481.44, 108,288.90 and 44,027.28 is: 60,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,481.44 : 108,288.90 = 44,027.28 : x
  2. Step 2: Convert to fraction form
    78,481.44/108,288.90 = 44,027.28/x
  3. Step 3: Cross multiply
    78,481.44x = 108,288.90 × 44,027.28
  4. Step 4: Simplify right side
    78,481.44x = 4,767,665,721.19
  5. Step 5: Solve for x
    x = 4,767,665,721.19/78,481.44
  6. Step 6: Final answer
    x = 60,748.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.