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Finding the Fourth Proportional to 168,067.20, 251,809.20 and 144,739.20

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Solution

The fourth proportional to 168,067.20, 251,809.20 and 144,739.20 is: 216,857.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,067.20 : 251,809.20 = 144,739.20 : x
  2. Step 2: Convert to fraction form
    168,067.20/251,809.20 = 144,739.20/x
  3. Step 3: Cross multiply
    168,067.20x = 251,809.20 × 144,739.20
  4. Step 4: Simplify right side
    168,067.20x = 36,446,662,160.64
  5. Step 5: Solve for x
    x = 36,446,662,160.64/168,067.20
  6. Step 6: Final answer
    x = 216,857.67

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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.