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Finding the Fourth Proportional to 120,427.68, 166,191.40 and 66,713.44

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Solution

The fourth proportional to 120,427.68, 166,191.40 and 66,713.44 is: 92,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,427.68 : 166,191.40 = 66,713.44 : x
  2. Step 2: Convert to fraction form
    120,427.68/166,191.40 = 66,713.44/x
  3. Step 3: Cross multiply
    120,427.68x = 166,191.40 × 66,713.44
  4. Step 4: Simplify right side
    120,427.68x = 11,087,199,992.42
  5. Step 5: Solve for x
    x = 11,087,199,992.42/120,427.68
  6. Step 6: Final answer
    x = 92,065.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.