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Finding the Fourth Proportional to 625,776.17, 938,353.39 and 199,256.31

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Solution

The fourth proportional to 625,776.17, 938,353.39 and 199,256.31 is: 298,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,776.17 : 938,353.39 = 199,256.31 : x
  2. Step 2: Convert to fraction form
    625,776.17/938,353.39 = 199,256.31/x
  3. Step 3: Cross multiply
    625,776.17x = 938,353.39 × 199,256.31
  4. Step 4: Simplify right side
    625,776.17x = 186,972,833,469.25
  5. Step 5: Solve for x
    x = 186,972,833,469.25/625,776.17
  6. Step 6: Final answer
    x = 298,785.48

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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.