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Finding the Fourth Proportional to 220,873.94, 331,342.23 and 71,079.43

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Solution

The fourth proportional to 220,873.94, 331,342.23 and 71,079.43 is: 106,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,873.94 : 331,342.23 = 71,079.43 : x
  2. Step 2: Convert to fraction form
    220,873.94/331,342.23 = 71,079.43/x
  3. Step 3: Cross multiply
    220,873.94x = 331,342.23 × 71,079.43
  4. Step 4: Simplify right side
    220,873.94x = 23,551,616,843.33
  5. Step 5: Solve for x
    x = 23,551,616,843.33/220,873.94
  6. Step 6: Final answer
    x = 106,629.22

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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.