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Finding the Fourth Proportional to 120,651.84, 166,497.40 and 66,935.94

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Solution

The fourth proportional to 120,651.84, 166,497.40 and 66,935.94 is: 92,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,651.84 : 166,497.40 = 66,935.94 : x
  2. Step 2: Convert to fraction form
    120,651.84/166,497.40 = 66,935.94/x
  3. Step 3: Cross multiply
    120,651.84x = 166,497.40 × 66,935.94
  4. Step 4: Simplify right side
    120,651.84x = 11,144,659,435.86
  5. Step 5: Solve for x
    x = 11,144,659,435.86/120,651.84
  6. Step 6: Final answer
    x = 92,370.41

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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.