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Finding the Fourth Proportional to 110,821.80, 166,124.70 and 63,388.20

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Solution

The fourth proportional to 110,821.80, 166,124.70 and 63,388.20 is: 95,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,821.80 : 166,124.70 = 63,388.20 : x
  2. Step 2: Convert to fraction form
    110,821.80/166,124.70 = 63,388.20/x
  3. Step 3: Cross multiply
    110,821.80x = 166,124.70 × 63,388.20
  4. Step 4: Simplify right side
    110,821.80x = 10,530,345,708.54
  5. Step 5: Solve for x
    x = 10,530,345,708.54/110,821.80
  6. Step 6: Final answer
    x = 95,020.53

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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.