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Finding the Fourth Proportional to 167,838.66, 231,623.21 and 91,364.05

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Solution

The fourth proportional to 167,838.66, 231,623.21 and 91,364.05 is: 126,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,838.66 : 231,623.21 = 91,364.05 : x
  2. Step 2: Convert to fraction form
    167,838.66/231,623.21 = 91,364.05/x
  3. Step 3: Cross multiply
    167,838.66x = 231,623.21 × 91,364.05
  4. Step 4: Simplify right side
    167,838.66x = 21,162,032,924.66
  5. Step 5: Solve for x
    x = 21,162,032,924.66/167,838.66
  6. Step 6: Final answer
    x = 126,085.57

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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.