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Finding the Fourth Proportional to 43,687.75, 65,531.67 and 10,855.75

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Solution

The fourth proportional to 43,687.75, 65,531.67 and 10,855.75 is: 16,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,687.75 : 65,531.67 = 10,855.75 : x
  2. Step 2: Convert to fraction form
    43,687.75/65,531.67 = 10,855.75/x
  3. Step 3: Cross multiply
    43,687.75x = 65,531.67 × 10,855.75
  4. Step 4: Simplify right side
    43,687.75x = 711,395,426.60
  5. Step 5: Solve for x
    x = 711,395,426.60/43,687.75
  6. Step 6: Final answer
    x = 16,283.64

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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.