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Finding the Fourth Proportional to 33,805.20, 50,610.60 and 20,683.20

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Solution

The fourth proportional to 33,805.20, 50,610.60 and 20,683.20 is: 30,965.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,805.20 : 50,610.60 = 20,683.20 : x
  2. Step 2: Convert to fraction form
    33,805.20/50,610.60 = 20,683.20/x
  3. Step 3: Cross multiply
    33,805.20x = 50,610.60 × 20,683.20
  4. Step 4: Simplify right side
    33,805.20x = 1,046,789,161.92
  5. Step 5: Solve for x
    x = 1,046,789,161.92/33,805.20
  6. Step 6: Final answer
    x = 30,965.33

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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.