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Finding the Fourth Proportional to 127,762.20, 192,600 and 119,198.88

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Solution

The fourth proportional to 127,762.20, 192,600 and 119,198.88 is: 179,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,762.20 : 192,600 = 119,198.88 : x
  2. Step 2: Convert to fraction form
    127,762.20/192,600 = 119,198.88/x
  3. Step 3: Cross multiply
    127,762.20x = 192,600 × 119,198.88
  4. Step 4: Simplify right side
    127,762.20x = 22,957,704,288
  5. Step 5: Solve for x
    x = 22,957,704,288/127,762.20
  6. Step 6: Final answer
    x = 179,690.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.