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Finding the Fourth Proportional to 167,644.70, 231,352.44 and 91,165.31

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Solution

The fourth proportional to 167,644.70, 231,352.44 and 91,165.31 is: 125,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,644.70 : 231,352.44 = 91,165.31 : x
  2. Step 2: Convert to fraction form
    167,644.70/231,352.44 = 91,165.31/x
  3. Step 3: Cross multiply
    167,644.70x = 231,352.44 × 91,165.31
  4. Step 4: Simplify right side
    167,644.70x = 21,091,317,582.15
  5. Step 5: Solve for x
    x = 21,091,317,582.15/167,644.70
  6. Step 6: Final answer
    x = 125,809.63

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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.