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Finding the Fourth Proportional to 103,993.21, 155,989.82 and 33,872.52

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Solution

The fourth proportional to 103,993.21, 155,989.82 and 33,872.52 is: 50,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,993.21 : 155,989.82 = 33,872.52 : x
  2. Step 2: Convert to fraction form
    103,993.21/155,989.82 = 33,872.52/x
  3. Step 3: Cross multiply
    103,993.21x = 155,989.82 × 33,872.52
  4. Step 4: Simplify right side
    103,993.21x = 5,283,768,297.75
  5. Step 5: Solve for x
    x = 5,283,768,297.75/103,993.21
  6. Step 6: Final answer
    x = 50,808.78

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1.5x scale

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.