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Finding the Fourth Proportional to 220,736.55, 331,154.16 and 80,495.16

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Solution

The fourth proportional to 220,736.55, 331,154.16 and 80,495.16 is: 120,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,736.55 : 331,154.16 = 80,495.16 : x
  2. Step 2: Convert to fraction form
    220,736.55/331,154.16 = 80,495.16/x
  3. Step 3: Cross multiply
    220,736.55x = 331,154.16 × 80,495.16
  4. Step 4: Simplify right side
    220,736.55x = 26,656,307,093.87
  5. Step 5: Solve for x
    x = 26,656,307,093.87/220,736.55
  6. Step 6: Final answer
    x = 120,760.73

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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.