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Finding the Fourth Proportional to 192,060.80, 287,918.40 and 125,532.80

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Solution

The fourth proportional to 192,060.80, 287,918.40 and 125,532.80 is: 188,186.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,060.80 : 287,918.40 = 125,532.80 : x
  2. Step 2: Convert to fraction form
    192,060.80/287,918.40 = 125,532.80/x
  3. Step 3: Cross multiply
    192,060.80x = 287,918.40 × 125,532.80
  4. Step 4: Simplify right side
    192,060.80x = 36,143,202,923.52
  5. Step 5: Solve for x
    x = 36,143,202,923.52/192,060.80
  6. Step 6: Final answer
    x = 188,186.26

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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.