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Finding the Fourth Proportional to 120,739.20, 166,612.20 and 67,024.20

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Solution

The fourth proportional to 120,739.20, 166,612.20 and 67,024.20 is: 92,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,739.20 : 166,612.20 = 67,024.20 : x
  2. Step 2: Convert to fraction form
    120,739.20/166,612.20 = 67,024.20/x
  3. Step 3: Cross multiply
    120,739.20x = 166,612.20 × 67,024.20
  4. Step 4: Simplify right side
    120,739.20x = 11,167,049,415.24
  5. Step 5: Solve for x
    x = 11,167,049,415.24/120,739.20
  6. Step 6: Final answer
    x = 92,489.01

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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.