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Finding the Fourth Proportional to 116,974.66, 161,234.63 and 91,435.97

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Solution

The fourth proportional to 116,974.66, 161,234.63 and 91,435.97 is: 126,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,974.66 : 161,234.63 = 91,435.97 : x
  2. Step 2: Convert to fraction form
    116,974.66/161,234.63 = 91,435.97/x
  3. Step 3: Cross multiply
    116,974.66x = 161,234.63 × 91,435.97
  4. Step 4: Simplify right side
    116,974.66x = 14,742,644,791.64
  5. Step 5: Solve for x
    x = 14,742,644,791.64/116,974.66
  6. Step 6: Final answer
    x = 126,032.81

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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.