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Finding the Fourth Proportional to 68,889.63, 103,238.21 and 37,231.44

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Solution

The fourth proportional to 68,889.63, 103,238.21 and 37,231.44 is: 55,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,889.63 : 103,238.21 = 37,231.44 : x
  2. Step 2: Convert to fraction form
    68,889.63/103,238.21 = 37,231.44/x
  3. Step 3: Cross multiply
    68,889.63x = 103,238.21 × 37,231.44
  4. Step 4: Simplify right side
    68,889.63x = 3,843,707,221.32
  5. Step 5: Solve for x
    x = 3,843,707,221.32/68,889.63
  6. Step 6: Final answer
    x = 55,795.15

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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.