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Finding the Fourth Proportional to 641,975.87, 962,961.48 and 192,694.79

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Solution

The fourth proportional to 641,975.87, 962,961.48 and 192,694.79 is: 289,041.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,975.87 : 962,961.48 = 192,694.79 : x
  2. Step 2: Convert to fraction form
    641,975.87/962,961.48 = 192,694.79/x
  3. Step 3: Cross multiply
    641,975.87x = 962,961.48 × 192,694.79
  4. Step 4: Simplify right side
    641,975.87x = 185,557,655,351.88
  5. Step 5: Solve for x
    x = 185,557,655,351.88/641,975.87
  6. Step 6: Final answer
    x = 289,041.48

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Double scale
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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.