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Finding the Fourth Proportional to 120,674.46, 166,531.48 and 66,960.52

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Solution

The fourth proportional to 120,674.46, 166,531.48 and 66,960.52 is: 92,405.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,674.46 : 166,531.48 = 66,960.52 : x
  2. Step 2: Convert to fraction form
    120,674.46/166,531.48 = 66,960.52/x
  3. Step 3: Cross multiply
    120,674.46x = 166,531.48 × 66,960.52
  4. Step 4: Simplify right side
    120,674.46x = 11,151,034,497.17
  5. Step 5: Solve for x
    x = 11,151,034,497.17/120,674.46
  6. Step 6: Final answer
    x = 92,405.92

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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.