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Finding the Fourth Proportional to 120,955.03, 166,922.22 and 66,511.33

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Solution

The fourth proportional to 120,955.03, 166,922.22 and 66,511.33 is: 91,787.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,955.03 : 166,922.22 = 66,511.33 : x
  2. Step 2: Convert to fraction form
    120,955.03/166,922.22 = 66,511.33/x
  3. Step 3: Cross multiply
    120,955.03x = 166,922.22 × 66,511.33
  4. Step 4: Simplify right side
    120,955.03x = 11,102,218,690.86
  5. Step 5: Solve for x
    x = 11,102,218,690.86/120,955.03
  6. Step 6: Final answer
    x = 91,787.99

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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.