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Finding the Fourth Proportional to 110,813.60, 166,204.20 and 31,919.60

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Solution

The fourth proportional to 110,813.60, 166,204.20 and 31,919.60 is: 47,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,813.60 : 166,204.20 = 31,919.60 : x
  2. Step 2: Convert to fraction form
    110,813.60/166,204.20 = 31,919.60/x
  3. Step 3: Cross multiply
    110,813.60x = 166,204.20 × 31,919.60
  4. Step 4: Simplify right side
    110,813.60x = 5,305,171,582.32
  5. Step 5: Solve for x
    x = 5,305,171,582.32/110,813.60
  6. Step 6: Final answer
    x = 47,874.73

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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.