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Finding the Fourth Proportional to 168,459.35, 232,474.40 and 91,979.11

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Solution

The fourth proportional to 168,459.35, 232,474.40 and 91,979.11 is: 126,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,459.35 : 232,474.40 = 91,979.11 : x
  2. Step 2: Convert to fraction form
    168,459.35/232,474.40 = 91,979.11/x
  3. Step 3: Cross multiply
    168,459.35x = 232,474.40 × 91,979.11
  4. Step 4: Simplify right side
    168,459.35x = 21,382,787,713.62
  5. Step 5: Solve for x
    x = 21,382,787,713.62/168,459.35
  6. Step 6: Final answer
    x = 126,931.44

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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.