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Finding the Fourth Proportional to 552,890.82, 763,027.92 and 311,196.54

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Solution

The fourth proportional to 552,890.82, 763,027.92 and 311,196.54 is: 429,472.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,890.82 : 763,027.92 = 311,196.54 : x
  2. Step 2: Convert to fraction form
    552,890.82/763,027.92 = 311,196.54/x
  3. Step 3: Cross multiply
    552,890.82x = 763,027.92 × 311,196.54
  4. Step 4: Simplify right side
    552,890.82x = 237,451,648,627.40
  5. Step 5: Solve for x
    x = 237,451,648,627.40/552,890.82
  6. Step 6: Final answer
    x = 429,472.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.