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Finding the Fourth Proportional to 43,805.26, 65,754.65 and 18,857.66

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Solution

The fourth proportional to 43,805.26, 65,754.65 and 18,857.66 is: 28,306.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,805.26 : 65,754.65 = 18,857.66 : x
  2. Step 2: Convert to fraction form
    43,805.26/65,754.65 = 18,857.66/x
  3. Step 3: Cross multiply
    43,805.26x = 65,754.65 × 18,857.66
  4. Step 4: Simplify right side
    43,805.26x = 1,239,978,833.12
  5. Step 5: Solve for x
    x = 1,239,978,833.12/43,805.26
  6. Step 6: Final answer
    x = 28,306.62

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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.