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Finding the Fourth Proportional to 625,857.22, 938,859.14 and 199,243.63

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Solution

The fourth proportional to 625,857.22, 938,859.14 and 199,243.63 is: 298,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,857.22 : 938,859.14 = 199,243.63 : x
  2. Step 2: Convert to fraction form
    625,857.22/938,859.14 = 199,243.63/x
  3. Step 3: Cross multiply
    625,857.22x = 938,859.14 × 199,243.63
  4. Step 4: Simplify right side
    625,857.22x = 187,061,703,112.28
  5. Step 5: Solve for x
    x = 187,061,703,112.28/625,857.22
  6. Step 6: Final answer
    x = 298,888.78

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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.