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Finding the Fourth Proportional to 168,311.80, 252,030.30 and 133,028.20

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Solution

The fourth proportional to 168,311.80, 252,030.30 and 133,028.20 is: 199,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,311.80 : 252,030.30 = 133,028.20 : x
  2. Step 2: Convert to fraction form
    168,311.80/252,030.30 = 133,028.20/x
  3. Step 3: Cross multiply
    168,311.80x = 252,030.30 × 133,028.20
  4. Step 4: Simplify right side
    168,311.80x = 33,527,137,154.46
  5. Step 5: Solve for x
    x = 33,527,137,154.46/168,311.80
  6. Step 6: Final answer
    x = 199,196.59

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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.