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Finding the Fourth Proportional to 120,716.67, 166,581.18 and 67,001.70

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Solution

The fourth proportional to 120,716.67, 166,581.18 and 67,001.70 is: 92,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.67 : 166,581.18 = 67,001.70 : x
  2. Step 2: Convert to fraction form
    120,716.67/166,581.18 = 67,001.70/x
  3. Step 3: Cross multiply
    120,716.67x = 166,581.18 × 67,001.70
  4. Step 4: Simplify right side
    120,716.67x = 11,161,222,248.01
  5. Step 5: Solve for x
    x = 11,161,222,248.01/120,716.67
  6. Step 6: Final answer
    x = 92,458.00

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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.