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Finding the Fourth Proportional to 179,670.20, 269,658.90 and 79,983.80

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Solution

The fourth proportional to 179,670.20, 269,658.90 and 79,983.80 is: 120,044.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,670.20 : 269,658.90 = 79,983.80 : x
  2. Step 2: Convert to fraction form
    179,670.20/269,658.90 = 79,983.80/x
  3. Step 3: Cross multiply
    179,670.20x = 269,658.90 × 79,983.80
  4. Step 4: Simplify right side
    179,670.20x = 21,568,343,525.82
  5. Step 5: Solve for x
    x = 21,568,343,525.82/179,670.20
  6. Step 6: Final answer
    x = 120,044.08

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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.