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Finding the Fourth Proportional to 120,648.30, 166,493.19 and 66,931.98

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Solution

The fourth proportional to 120,648.30, 166,493.19 and 66,931.98 is: 92,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,648.30 : 166,493.19 = 66,931.98 : x
  2. Step 2: Convert to fraction form
    120,648.30/166,493.19 = 66,931.98/x
  3. Step 3: Cross multiply
    120,648.30x = 166,493.19 × 66,931.98
  4. Step 4: Simplify right side
    120,648.30x = 11,143,718,863.22
  5. Step 5: Solve for x
    x = 11,143,718,863.22/120,648.30
  6. Step 6: Final answer
    x = 92,365.32

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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.