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Finding the Fourth Proportional to 168,381.89, 232,367.51 and 91,901.69

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Solution

The fourth proportional to 168,381.89, 232,367.51 and 91,901.69 is: 126,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,381.89 : 232,367.51 = 91,901.69 : x
  2. Step 2: Convert to fraction form
    168,381.89/232,367.51 = 91,901.69/x
  3. Step 3: Cross multiply
    168,381.89x = 232,367.51 × 91,901.69
  4. Step 4: Simplify right side
    168,381.89x = 21,354,966,870.09
  5. Step 5: Solve for x
    x = 21,354,966,870.09/168,381.89
  6. Step 6: Final answer
    x = 126,824.61

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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.