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Finding the Fourth Proportional to 33,570.87, 50,361.09 and 12,509.11

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Solution

The fourth proportional to 33,570.87, 50,361.09 and 12,509.11 is: 18,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,570.87 : 50,361.09 = 12,509.11 : x
  2. Step 2: Convert to fraction form
    33,570.87/50,361.09 = 12,509.11/x
  3. Step 3: Cross multiply
    33,570.87x = 50,361.09 × 12,509.11
  4. Step 4: Simplify right side
    33,570.87x = 629,972,414.53
  5. Step 5: Solve for x
    x = 629,972,414.53/33,570.87
  6. Step 6: Final answer
    x = 18,765.45

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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.