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Finding the Fourth Proportional to 57,408.44, 79,223.69 and 33,212.80

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Solution

The fourth proportional to 57,408.44, 79,223.69 and 33,212.80 is: 45,833.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,408.44 : 79,223.69 = 33,212.80 : x
  2. Step 2: Convert to fraction form
    57,408.44/79,223.69 = 33,212.80/x
  3. Step 3: Cross multiply
    57,408.44x = 79,223.69 × 33,212.80
  4. Step 4: Simplify right side
    57,408.44x = 2,631,240,009.05
  5. Step 5: Solve for x
    x = 2,631,240,009.05/57,408.44
  6. Step 6: Final answer
    x = 45,833.68

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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.