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Finding the Fourth Proportional to 69,336.60, 104,020.55 and 21,954.57

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Solution

The fourth proportional to 69,336.60, 104,020.55 and 21,954.57 is: 32,936.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,336.60 : 104,020.55 = 21,954.57 : x
  2. Step 2: Convert to fraction form
    69,336.60/104,020.55 = 21,954.57/x
  3. Step 3: Cross multiply
    69,336.60x = 104,020.55 × 21,954.57
  4. Step 4: Simplify right side
    69,336.60x = 2,283,726,446.41
  5. Step 5: Solve for x
    x = 2,283,726,446.41/69,336.60
  6. Step 6: Final answer
    x = 32,936.81

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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.