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Finding the Fourth Proportional to 168,076.53, 231,945.65 and 91,595.65

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Solution

The fourth proportional to 168,076.53, 231,945.65 and 91,595.65 is: 126,402.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,076.53 : 231,945.65 = 91,595.65 : x
  2. Step 2: Convert to fraction form
    168,076.53/231,945.65 = 91,595.65/x
  3. Step 3: Cross multiply
    168,076.53x = 231,945.65 × 91,595.65
  4. Step 4: Simplify right side
    168,076.53x = 21,245,211,416.69
  5. Step 5: Solve for x
    x = 21,245,211,416.69/168,076.53
  6. Step 6: Final answer
    x = 126,402.01

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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.