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Finding the Fourth Proportional to 120,410.01, 166,163.97 and 65,961.76

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Solution

The fourth proportional to 120,410.01, 166,163.97 and 65,961.76 is: 91,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,410.01 : 166,163.97 = 65,961.76 : x
  2. Step 2: Convert to fraction form
    120,410.01/166,163.97 = 65,961.76/x
  3. Step 3: Cross multiply
    120,410.01x = 166,163.97 × 65,961.76
  4. Step 4: Simplify right side
    120,410.01x = 10,960,467,909.79
  5. Step 5: Solve for x
    x = 10,960,467,909.79/120,410.01
  6. Step 6: Final answer
    x = 91,026.22

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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.