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Finding the Fourth Proportional to 92,093.82, 138,136.62 and 28,912.44

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Solution

The fourth proportional to 92,093.82, 138,136.62 and 28,912.44 is: 43,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,093.82 : 138,136.62 = 28,912.44 : x
  2. Step 2: Convert to fraction form
    92,093.82/138,136.62 = 28,912.44/x
  3. Step 3: Cross multiply
    92,093.82x = 138,136.62 × 28,912.44
  4. Step 4: Simplify right side
    92,093.82x = 3,993,866,737.55
  5. Step 5: Solve for x
    x = 3,993,866,737.55/92,093.82
  6. Step 6: Final answer
    x = 43,367.37

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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.