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Finding the Fourth Proportional to 120,994.90, 166,928.34 and 73,230.82

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Solution

The fourth proportional to 120,994.90, 166,928.34 and 73,230.82 is: 101,031.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,994.90 : 166,928.34 = 73,230.82 : x
  2. Step 2: Convert to fraction form
    120,994.90/166,928.34 = 73,230.82/x
  3. Step 3: Cross multiply
    120,994.90x = 166,928.34 × 73,230.82
  4. Step 4: Simplify right side
    120,994.90x = 12,224,299,076.73
  5. Step 5: Solve for x
    x = 12,224,299,076.73/120,994.90
  6. Step 6: Final answer
    x = 101,031.53

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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.