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Finding the Fourth Proportional to 43,409.92, 65,115.84 and 12,244.48

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Solution

The fourth proportional to 43,409.92, 65,115.84 and 12,244.48 is: 18,366.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,409.92 : 65,115.84 = 12,244.48 : x
  2. Step 2: Convert to fraction form
    43,409.92/65,115.84 = 12,244.48/x
  3. Step 3: Cross multiply
    43,409.92x = 65,115.84 × 12,244.48
  4. Step 4: Simplify right side
    43,409.92x = 797,309,600.56
  5. Step 5: Solve for x
    x = 797,309,600.56/43,409.92
  6. Step 6: Final answer
    x = 18,366.99

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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.