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Finding the Fourth Proportional to 110,764.80, 166,147.20 and 71,366.40

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Solution

The fourth proportional to 110,764.80, 166,147.20 and 71,366.40 is: 107,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,764.80 : 166,147.20 = 71,366.40 : x
  2. Step 2: Convert to fraction form
    110,764.80/166,147.20 = 71,366.40/x
  3. Step 3: Cross multiply
    110,764.80x = 166,147.20 × 71,366.40
  4. Step 4: Simplify right side
    110,764.80x = 11,857,327,534.08
  5. Step 5: Solve for x
    x = 11,857,327,534.08/110,764.80
  6. Step 6: Final answer
    x = 107,049.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.