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Finding the Fourth Proportional to 263,245.68, 394,868.22 and 85,752.41

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Solution

The fourth proportional to 263,245.68, 394,868.22 and 85,752.41 is: 128,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,245.68 : 394,868.22 = 85,752.41 : x
  2. Step 2: Convert to fraction form
    263,245.68/394,868.22 = 85,752.41/x
  3. Step 3: Cross multiply
    263,245.68x = 394,868.22 × 85,752.41
  4. Step 4: Simplify right side
    263,245.68x = 33,860,899,523.07
  5. Step 5: Solve for x
    x = 33,860,899,523.07/263,245.68
  6. Step 6: Final answer
    x = 128,628.51

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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.