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Finding the Fourth Proportional to 192,755.25, 289,151.10 and 66,390.39

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Solution

The fourth proportional to 192,755.25, 289,151.10 and 66,390.39 is: 99,591.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,755.25 : 289,151.10 = 66,390.39 : x
  2. Step 2: Convert to fraction form
    192,755.25/289,151.10 = 66,390.39/x
  3. Step 3: Cross multiply
    192,755.25x = 289,151.10 × 66,390.39
  4. Step 4: Simplify right side
    192,755.25x = 19,196,854,297.93
  5. Step 5: Solve for x
    x = 19,196,854,297.93/192,755.25
  6. Step 6: Final answer
    x = 99,591.86

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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.