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Finding the Fourth Proportional to 120,916.56, 166,774.32 and 73,108.74

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Solution

The fourth proportional to 120,916.56, 166,774.32 and 73,108.74 is: 100,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,916.56 : 166,774.32 = 73,108.74 : x
  2. Step 2: Convert to fraction form
    120,916.56/166,774.32 = 73,108.74/x
  3. Step 3: Cross multiply
    120,916.56x = 166,774.32 × 73,108.74
  4. Step 4: Simplify right side
    120,916.56x = 12,192,660,399.56
  5. Step 5: Solve for x
    x = 12,192,660,399.56/120,916.56
  6. Step 6: Final answer
    x = 100,835.32

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