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Finding the Fourth Proportional to 111,245.40, 166,868.10 and 73,855.80

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Solution

The fourth proportional to 111,245.40, 166,868.10 and 73,855.80 is: 110,783.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,245.40 : 166,868.10 = 73,855.80 : x
  2. Step 2: Convert to fraction form
    111,245.40/166,868.10 = 73,855.80/x
  3. Step 3: Cross multiply
    111,245.40x = 166,868.10 × 73,855.80
  4. Step 4: Simplify right side
    111,245.40x = 12,324,177,019.98
  5. Step 5: Solve for x
    x = 12,324,177,019.98/111,245.40
  6. Step 6: Final answer
    x = 110,783.70

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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.