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Finding the Fourth Proportional to 109,906.60, 164,843.70 and 31,028.80

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Solution

The fourth proportional to 109,906.60, 164,843.70 and 31,028.80 is: 46,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,906.60 : 164,843.70 = 31,028.80 : x
  2. Step 2: Convert to fraction form
    109,906.60/164,843.70 = 31,028.80/x
  3. Step 3: Cross multiply
    109,906.60x = 164,843.70 × 31,028.80
  4. Step 4: Simplify right side
    109,906.60x = 5,114,902,198.56
  5. Step 5: Solve for x
    x = 5,114,902,198.56/109,906.60
  6. Step 6: Final answer
    x = 46,538.63

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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.