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Finding the Fourth Proportional to 324,361.80, 486,589.20 and 99,741.10

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Solution

The fourth proportional to 324,361.80, 486,589.20 and 99,741.10 is: 149,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,361.80 : 486,589.20 = 99,741.10 : x
  2. Step 2: Convert to fraction form
    324,361.80/486,589.20 = 99,741.10/x
  3. Step 3: Cross multiply
    324,361.80x = 486,589.20 × 99,741.10
  4. Step 4: Simplify right side
    324,361.80x = 48,532,942,056.12
  5. Step 5: Solve for x
    x = 48,532,942,056.12/324,361.80
  6. Step 6: Final answer
    x = 149,625.95

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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.