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Finding the Fourth Proportional to 110,728.80, 166,093.20 and 40,635.45

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Solution

The fourth proportional to 110,728.80, 166,093.20 and 40,635.45 is: 60,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,728.80 : 166,093.20 = 40,635.45 : x
  2. Step 2: Convert to fraction form
    110,728.80/166,093.20 = 40,635.45/x
  3. Step 3: Cross multiply
    110,728.80x = 166,093.20 × 40,635.45
  4. Step 4: Simplify right side
    110,728.80x = 6,749,271,923.94
  5. Step 5: Solve for x
    x = 6,749,271,923.94/110,728.80
  6. Step 6: Final answer
    x = 60,953.18

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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.