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Finding the Fourth Proportional to 43,661.84, 65,491.37 and 12,073.79

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Solution

The fourth proportional to 43,661.84, 65,491.37 and 12,073.79 is: 18,110.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661.84 : 65,491.37 = 12,073.79 : x
  2. Step 2: Convert to fraction form
    43,661.84/65,491.37 = 12,073.79/x
  3. Step 3: Cross multiply
    43,661.84x = 65,491.37 × 12,073.79
  4. Step 4: Simplify right side
    43,661.84x = 790,729,196.83
  5. Step 5: Solve for x
    x = 790,729,196.83/43,661.84
  6. Step 6: Final answer
    x = 18,110.31

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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.