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Finding the Fourth Proportional to 190,691.80, 285,782.94 and 100,550.68

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Solution

The fourth proportional to 190,691.80, 285,782.94 and 100,550.68 is: 150,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,691.80 : 285,782.94 = 100,550.68 : x
  2. Step 2: Convert to fraction form
    190,691.80/285,782.94 = 100,550.68/x
  3. Step 3: Cross multiply
    190,691.80x = 285,782.94 × 100,550.68
  4. Step 4: Simplify right side
    190,691.80x = 28,735,668,949.40
  5. Step 5: Solve for x
    x = 28,735,668,949.40/190,691.80
  6. Step 6: Final answer
    x = 150,691.69

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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.