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Finding the Fourth Proportional to 331,813.76, 497,722.52 and 82,495.76

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Solution

The fourth proportional to 331,813.76, 497,722.52 and 82,495.76 is: 123,744.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,813.76 : 497,722.52 = 82,495.76 : x
  2. Step 2: Convert to fraction form
    331,813.76/497,722.52 = 82,495.76/x
  3. Step 3: Cross multiply
    331,813.76x = 497,722.52 × 82,495.76
  4. Step 4: Simplify right side
    331,813.76x = 41,059,997,556.52
  5. Step 5: Solve for x
    x = 41,059,997,556.52/331,813.76
  6. Step 6: Final answer
    x = 123,744.11

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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.