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Finding the Fourth Proportional to 120,998.56, 166,933.60 and 73,234.40

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Solution

The fourth proportional to 120,998.56, 166,933.60 and 73,234.40 is: 101,036.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,998.56 : 166,933.60 = 73,234.40 : x
  2. Step 2: Convert to fraction form
    120,998.56/166,933.60 = 73,234.40/x
  3. Step 3: Cross multiply
    120,998.56x = 166,933.60 × 73,234.40
  4. Step 4: Simplify right side
    120,998.56x = 12,225,282,035.84
  5. Step 5: Solve for x
    x = 12,225,282,035.84/120,998.56
  6. Step 6: Final answer
    x = 101,036.59

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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.