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Finding the Fourth Proportional to 263,072.64, 394,613.82 and 85,578.96

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Solution

The fourth proportional to 263,072.64, 394,613.82 and 85,578.96 is: 128,370.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,072.64 : 394,613.82 = 85,578.96 : x
  2. Step 2: Convert to fraction form
    263,072.64/394,613.82 = 85,578.96/x
  3. Step 3: Cross multiply
    263,072.64x = 394,613.82 × 85,578.96
  4. Step 4: Simplify right side
    263,072.64x = 33,770,640,317.23
  5. Step 5: Solve for x
    x = 33,770,640,317.23/263,072.64
  6. Step 6: Final answer
    x = 128,370.02

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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.