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Finding the Fourth Proportional to 167,969.85, 231,803.71 and 91,491.25

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Solution

The fourth proportional to 167,969.85, 231,803.71 and 91,491.25 is: 126,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,969.85 : 231,803.71 = 91,491.25 : x
  2. Step 2: Convert to fraction form
    167,969.85/231,803.71 = 91,491.25/x
  3. Step 3: Cross multiply
    167,969.85x = 231,803.71 × 91,491.25
  4. Step 4: Simplify right side
    167,969.85x = 21,208,009,566.06
  5. Step 5: Solve for x
    x = 21,208,009,566.06/167,969.85
  6. Step 6: Final answer
    x = 126,260.81

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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.