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Finding the Fourth Proportional to 394,037, 591,138.60 and 127,776.82

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Solution

The fourth proportional to 394,037, 591,138.60 and 127,776.82 is: 191,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,037 : 591,138.60 = 127,776.82 : x
  2. Step 2: Convert to fraction form
    394,037/591,138.60 = 127,776.82/x
  3. Step 3: Cross multiply
    394,037x = 591,138.60 × 127,776.82
  4. Step 4: Simplify right side
    394,037x = 75,533,810,487.25
  5. Step 5: Solve for x
    x = 75,533,810,487.25/394,037
  6. Step 6: Final answer
    x = 191,692.18

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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.