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Finding the Fourth Proportional to 103,689.70, 155,559.18 and 33,568.96

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Solution

The fourth proportional to 103,689.70, 155,559.18 and 33,568.96 is: 50,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.70 : 155,559.18 = 33,568.96 : x
  2. Step 2: Convert to fraction form
    103,689.70/155,559.18 = 33,568.96/x
  3. Step 3: Cross multiply
    103,689.70x = 155,559.18 × 33,568.96
  4. Step 4: Simplify right side
    103,689.70x = 5,221,959,891.05
  5. Step 5: Solve for x
    x = 5,221,959,891.05/103,689.70
  6. Step 6: Final answer
    x = 50,361.41

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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.