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Finding the Fourth Proportional to 100,571.94, 150,890.70 and 47,974.59

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Solution

The fourth proportional to 100,571.94, 150,890.70 and 47,974.59 is: 71,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,571.94 : 150,890.70 = 47,974.59 : x
  2. Step 2: Convert to fraction form
    100,571.94/150,890.70 = 47,974.59/x
  3. Step 3: Cross multiply
    100,571.94x = 150,890.70 × 47,974.59
  4. Step 4: Simplify right side
    100,571.94x = 7,238,919,467.31
  5. Step 5: Solve for x
    x = 7,238,919,467.31/100,571.94
  6. Step 6: Final answer
    x = 71,977.53

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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.