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Finding the Fourth Proportional to 427,249.44, 640,910.56 and 111,705.84

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Solution

The fourth proportional to 427,249.44, 640,910.56 and 111,705.84 is: 167,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,249.44 : 640,910.56 = 111,705.84 : x
  2. Step 2: Convert to fraction form
    427,249.44/640,910.56 = 111,705.84/x
  3. Step 3: Cross multiply
    427,249.44x = 640,910.56 × 111,705.84
  4. Step 4: Simplify right side
    427,249.44x = 71,593,452,469.67
  5. Step 5: Solve for x
    x = 71,593,452,469.67/427,249.44
  6. Step 6: Final answer
    x = 167,568.28

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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.