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Finding the Fourth Proportional to 33,321.70, 45,984.60 and 18,213.94

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Solution

The fourth proportional to 33,321.70, 45,984.60 and 18,213.94 is: 25,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,321.70 : 45,984.60 = 18,213.94 : x
  2. Step 2: Convert to fraction form
    33,321.70/45,984.60 = 18,213.94/x
  3. Step 3: Cross multiply
    33,321.70x = 45,984.60 × 18,213.94
  4. Step 4: Simplify right side
    33,321.70x = 837,560,424.33
  5. Step 5: Solve for x
    x = 837,560,424.33/33,321.70
  6. Step 6: Final answer
    x = 25,135.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.