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Finding the Fourth Proportional to 625,855.35, 938,856.32 and 199,241.76

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Solution

The fourth proportional to 625,855.35, 938,856.32 and 199,241.76 is: 298,885.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,855.35 : 938,856.32 = 199,241.76 : x
  2. Step 2: Convert to fraction form
    625,855.35/938,856.32 = 199,241.76/x
  3. Step 3: Cross multiply
    625,855.35x = 938,856.32 × 199,241.76
  4. Step 4: Simplify right side
    625,855.35x = 187,059,385,583.92
  5. Step 5: Solve for x
    x = 187,059,385,583.92/625,855.35
  6. Step 6: Final answer
    x = 298,885.97

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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.