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Finding the Fourth Proportional to 171,612.11, 236,815.03 and 100,003.79

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Solution

The fourth proportional to 171,612.11, 236,815.03 and 100,003.79 is: 137,999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,612.11 : 236,815.03 = 100,003.79 : x
  2. Step 2: Convert to fraction form
    171,612.11/236,815.03 = 100,003.79/x
  3. Step 3: Cross multiply
    171,612.11x = 236,815.03 × 100,003.79
  4. Step 4: Simplify right side
    171,612.11x = 23,682,400,528.96
  5. Step 5: Solve for x
    x = 23,682,400,528.96/171,612.11
  6. Step 6: Final answer
    x = 137,999.59

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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.