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Finding the Fourth Proportional to 73,601.60, 110,416.80 and 31,481.60

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Solution

The fourth proportional to 73,601.60, 110,416.80 and 31,481.60 is: 47,228.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,601.60 : 110,416.80 = 31,481.60 : x
  2. Step 2: Convert to fraction form
    73,601.60/110,416.80 = 31,481.60/x
  3. Step 3: Cross multiply
    73,601.60x = 110,416.80 × 31,481.60
  4. Step 4: Simplify right side
    73,601.60x = 3,476,097,530.88
  5. Step 5: Solve for x
    x = 3,476,097,530.88/73,601.60
  6. Step 6: Final answer
    x = 47,228.56

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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.