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Finding the Fourth Proportional to 193,266.51, 289,919.64 and 66,906.51

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Solution

The fourth proportional to 193,266.51, 289,919.64 and 66,906.51 is: 100,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,266.51 : 289,919.64 = 66,906.51 : x
  2. Step 2: Convert to fraction form
    193,266.51/289,919.64 = 66,906.51/x
  3. Step 3: Cross multiply
    193,266.51x = 289,919.64 × 66,906.51
  4. Step 4: Simplify right side
    193,266.51x = 19,397,511,292.86
  5. Step 5: Solve for x
    x = 19,397,511,292.86/193,266.51
  6. Step 6: Final answer
    x = 100,366.65

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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.