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Finding the Fourth Proportional to 399,286.21, 599,015.43 and 114,974.85

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Solution

The fourth proportional to 399,286.21, 599,015.43 and 114,974.85 is: 172,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,286.21 : 599,015.43 = 114,974.85 : x
  2. Step 2: Convert to fraction form
    399,286.21/599,015.43 = 114,974.85/x
  3. Step 3: Cross multiply
    399,286.21x = 599,015.43 × 114,974.85
  4. Step 4: Simplify right side
    399,286.21x = 68,871,709,211.94
  5. Step 5: Solve for x
    x = 68,871,709,211.94/399,286.21
  6. Step 6: Final answer
    x = 172,487.07

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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.