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Finding the Fourth Proportional to 120,792.38, 166,697.66 and 67,078.30

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Solution

The fourth proportional to 120,792.38, 166,697.66 and 67,078.30 is: 92,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,792.38 : 166,697.66 = 67,078.30 : x
  2. Step 2: Convert to fraction form
    120,792.38/166,697.66 = 67,078.30/x
  3. Step 3: Cross multiply
    120,792.38x = 166,697.66 × 67,078.30
  4. Step 4: Simplify right side
    120,792.38x = 11,181,795,646.78
  5. Step 5: Solve for x
    x = 11,181,795,646.78/120,792.38
  6. Step 6: Final answer
    x = 92,570.37

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1.5x scale

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.