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Finding the Fourth Proportional to 73,163.44, 109,669.83 and 28,772.20

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Solution

The fourth proportional to 73,163.44, 109,669.83 and 28,772.20 is: 43,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,163.44 : 109,669.83 = 28,772.20 : x
  2. Step 2: Convert to fraction form
    73,163.44/109,669.83 = 28,772.20/x
  3. Step 3: Cross multiply
    73,163.44x = 109,669.83 × 28,772.20
  4. Step 4: Simplify right side
    73,163.44x = 3,155,442,282.73
  5. Step 5: Solve for x
    x = 3,155,442,282.73/73,163.44
  6. Step 6: Final answer
    x = 43,128.68

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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.