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Finding the Fourth Proportional to 171,393.81, 236,769.86 and 136,893.21

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Solution

The fourth proportional to 171,393.81, 236,769.86 and 136,893.21 is: 189,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,393.81 : 236,769.86 = 136,893.21 : x
  2. Step 2: Convert to fraction form
    171,393.81/236,769.86 = 136,893.21/x
  3. Step 3: Cross multiply
    171,393.81x = 236,769.86 × 136,893.21
  4. Step 4: Simplify right side
    171,393.81x = 32,412,186,508.88
  5. Step 5: Solve for x
    x = 32,412,186,508.88/171,393.81
  6. Step 6: Final answer
    x = 189,109.43

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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.