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Finding the Fourth Proportional to 220,874.94, 331,343.73 and 71,080.43

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Solution

The fourth proportional to 220,874.94, 331,343.73 and 71,080.43 is: 106,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,874.94 : 331,343.73 = 71,080.43 : x
  2. Step 2: Convert to fraction form
    220,874.94/331,343.73 = 71,080.43/x
  3. Step 3: Cross multiply
    220,874.94x = 331,343.73 × 71,080.43
  4. Step 4: Simplify right side
    220,874.94x = 23,552,054,806.20
  5. Step 5: Solve for x
    x = 23,552,054,806.20/220,874.94
  6. Step 6: Final answer
    x = 106,630.72

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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.