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Finding the Fourth Proportional to 43,322.16, 64,983.24 and 18,361.65

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Solution

The fourth proportional to 43,322.16, 64,983.24 and 18,361.65 is: 27,542.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,322.16 : 64,983.24 = 18,361.65 : x
  2. Step 2: Convert to fraction form
    43,322.16/64,983.24 = 18,361.65/x
  3. Step 3: Cross multiply
    43,322.16x = 64,983.24 × 18,361.65
  4. Step 4: Simplify right side
    43,322.16x = 1,193,199,508.75
  5. Step 5: Solve for x
    x = 1,193,199,508.75/43,322.16
  6. Step 6: Final answer
    x = 27,542.48

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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.