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Finding the Fourth Proportional to 43,424.43, 65,129.98 and 11,837.03

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Solution

The fourth proportional to 43,424.43, 65,129.98 and 11,837.03 is: 17,753.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,424.43 : 65,129.98 = 11,837.03 : x
  2. Step 2: Convert to fraction form
    43,424.43/65,129.98 = 11,837.03/x
  3. Step 3: Cross multiply
    43,424.43x = 65,129.98 × 11,837.03
  4. Step 4: Simplify right side
    43,424.43x = 770,945,344.00
  5. Step 5: Solve for x
    x = 770,945,344.00/43,424.43
  6. Step 6: Final answer
    x = 17,753.73

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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.