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Finding the Fourth Proportional to 168,098.63, 231,979.46 and 91,617.41

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Solution

The fourth proportional to 168,098.63, 231,979.46 and 91,617.41 is: 126,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,098.63 : 231,979.46 = 91,617.41 : x
  2. Step 2: Convert to fraction form
    168,098.63/231,979.46 = 91,617.41/x
  3. Step 3: Cross multiply
    168,098.63x = 231,979.46 × 91,617.41
  4. Step 4: Simplify right side
    168,098.63x = 21,253,357,420.26
  5. Step 5: Solve for x
    x = 21,253,357,420.26/168,098.63
  6. Step 6: Final answer
    x = 126,433.86

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1.5x scale

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.