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Finding the Fourth Proportional to 625,912.14, 938,858.01 and 199,442.20

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Solution

The fourth proportional to 625,912.14, 938,858.01 and 199,442.20 is: 299,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,912.14 : 938,858.01 = 199,442.20 : x
  2. Step 2: Convert to fraction form
    625,912.14/938,858.01 = 199,442.20/x
  3. Step 3: Cross multiply
    625,912.14x = 938,858.01 × 199,442.20
  4. Step 4: Simplify right side
    625,912.14x = 187,247,906,508.72
  5. Step 5: Solve for x
    x = 187,247,906,508.72/625,912.14
  6. Step 6: Final answer
    x = 299,160.05

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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.