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Finding the Fourth Proportional to 168,393.42, 232,379.37 and 91,909.98

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Solution

The fourth proportional to 168,393.42, 232,379.37 and 91,909.98 is: 126,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,393.42 : 232,379.37 = 91,909.98 : x
  2. Step 2: Convert to fraction form
    168,393.42/232,379.37 = 91,909.98/x
  3. Step 3: Cross multiply
    168,393.42x = 232,379.37 × 91,909.98
  4. Step 4: Simplify right side
    168,393.42x = 21,357,983,249.11
  5. Step 5: Solve for x
    x = 21,357,983,249.11/168,393.42
  6. Step 6: Final answer
    x = 126,833.84

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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.