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Finding the Fourth Proportional to 68,690.09, 103,073.41 and 37,099.49

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Solution

The fourth proportional to 68,690.09, 103,073.41 and 37,099.49 is: 55,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,690.09 : 103,073.41 = 37,099.49 : x
  2. Step 2: Convert to fraction form
    68,690.09/103,073.41 = 37,099.49/x
  3. Step 3: Cross multiply
    68,690.09x = 103,073.41 × 37,099.49
  4. Step 4: Simplify right side
    68,690.09x = 3,823,970,474.57
  5. Step 5: Solve for x
    x = 3,823,970,474.57/68,690.09
  6. Step 6: Final answer
    x = 55,669.90

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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.