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Finding the Fourth Proportional to 43,906.05, 65,811.84 and 18,957.85

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Solution

The fourth proportional to 43,906.05, 65,811.84 and 18,957.85 is: 28,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,906.05 : 65,811.84 = 18,957.85 : x
  2. Step 2: Convert to fraction form
    43,906.05/65,811.84 = 18,957.85/x
  3. Step 3: Cross multiply
    43,906.05x = 65,811.84 × 18,957.85
  4. Step 4: Simplify right side
    43,906.05x = 1,247,650,861.96
  5. Step 5: Solve for x
    x = 1,247,650,861.96/43,906.05
  6. Step 6: Final answer
    x = 28,416.38

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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.