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Finding the Fourth Proportional to 192,020.09, 287,906.81 and 79,777.85

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Solution

The fourth proportional to 192,020.09, 287,906.81 and 79,777.85 is: 119,615.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,020.09 : 287,906.81 = 79,777.85 : x
  2. Step 2: Convert to fraction form
    192,020.09/287,906.81 = 79,777.85/x
  3. Step 3: Cross multiply
    192,020.09x = 287,906.81 × 79,777.85
  4. Step 4: Simplify right side
    192,020.09x = 22,968,584,463.74
  5. Step 5: Solve for x
    x = 22,968,584,463.74/192,020.09
  6. Step 6: Final answer
    x = 119,615.53

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1.5x scale

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.