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Finding the Fourth Proportional to 171,608.60, 236,679.46 and 120,789.56

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Solution

The fourth proportional to 171,608.60, 236,679.46 and 120,789.56 is: 166,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,608.60 : 236,679.46 = 120,789.56 : x
  2. Step 2: Convert to fraction form
    171,608.60/236,679.46 = 120,789.56/x
  3. Step 3: Cross multiply
    171,608.60x = 236,679.46 × 120,789.56
  4. Step 4: Simplify right side
    171,608.60x = 28,588,408,124.16
  5. Step 5: Solve for x
    x = 28,588,408,124.16/171,608.60
  6. Step 6: Final answer
    x = 166,590.76

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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.