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Finding the Fourth Proportional to 625,805.72, 938,398.03 and 199,285.96

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Solution

The fourth proportional to 625,805.72, 938,398.03 and 199,285.96 is: 298,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,805.72 : 938,398.03 = 199,285.96 : x
  2. Step 2: Convert to fraction form
    625,805.72/938,398.03 = 199,285.96/x
  3. Step 3: Cross multiply
    625,805.72x = 938,398.03 × 199,285.96
  4. Step 4: Simplify right side
    625,805.72x = 187,009,551,772.44
  5. Step 5: Solve for x
    x = 187,009,551,772.44/625,805.72
  6. Step 6: Final answer
    x = 298,830.05

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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.