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Finding the Fourth Proportional to 66,134.27, 99,236.95 and 43,958.09

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Solution

The fourth proportional to 66,134.27, 99,236.95 and 43,958.09 is: 65,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,134.27 : 99,236.95 = 43,958.09 : x
  2. Step 2: Convert to fraction form
    66,134.27/99,236.95 = 43,958.09/x
  3. Step 3: Cross multiply
    66,134.27x = 99,236.95 × 43,958.09
  4. Step 4: Simplify right side
    66,134.27x = 4,362,266,917.62
  5. Step 5: Solve for x
    x = 4,362,266,917.62/66,134.27
  6. Step 6: Final answer
    x = 65,960.76

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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.