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Finding the Fourth Proportional to 33,958.80, 50,938.20 and 18,212.40

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Solution

The fourth proportional to 33,958.80, 50,938.20 and 18,212.40 is: 27,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,958.80 : 50,938.20 = 18,212.40 : x
  2. Step 2: Convert to fraction form
    33,958.80/50,938.20 = 18,212.40/x
  3. Step 3: Cross multiply
    33,958.80x = 50,938.20 × 18,212.40
  4. Step 4: Simplify right side
    33,958.80x = 927,706,873.68
  5. Step 5: Solve for x
    x = 927,706,873.68/33,958.80
  6. Step 6: Final answer
    x = 27,318.60

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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.