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Finding the Fourth Proportional to 43,616.48, 65,418.24 and 15,908

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Solution

The fourth proportional to 43,616.48, 65,418.24 and 15,908 is: 23,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,616.48 : 65,418.24 = 15,908 : x
  2. Step 2: Convert to fraction form
    43,616.48/65,418.24 = 15,908/x
  3. Step 3: Cross multiply
    43,616.48x = 65,418.24 × 15,908
  4. Step 4: Simplify right side
    43,616.48x = 1,040,673,361.92
  5. Step 5: Solve for x
    x = 1,040,673,361.92/43,616.48
  6. Step 6: Final answer
    x = 23,859.64

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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.