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Finding the Fourth Proportional to 117,245.38, 161,789.04 and 66,262.48

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Solution

The fourth proportional to 117,245.38, 161,789.04 and 66,262.48 is: 91,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,245.38 : 161,789.04 = 66,262.48 : x
  2. Step 2: Convert to fraction form
    117,245.38/161,789.04 = 66,262.48/x
  3. Step 3: Cross multiply
    117,245.38x = 161,789.04 × 66,262.48
  4. Step 4: Simplify right side
    117,245.38x = 10,720,543,027.22
  5. Step 5: Solve for x
    x = 10,720,543,027.22/117,245.38
  6. Step 6: Final answer
    x = 91,436.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.