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Finding the Fourth Proportional to 331,351.52, 496,990.25 and 91,483.43

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Solution

The fourth proportional to 331,351.52, 496,990.25 and 91,483.43 is: 137,214.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,351.52 : 496,990.25 = 91,483.43 : x
  2. Step 2: Convert to fraction form
    331,351.52/496,990.25 = 91,483.43/x
  3. Step 3: Cross multiply
    331,351.52x = 496,990.25 × 91,483.43
  4. Step 4: Simplify right side
    331,351.52x = 45,466,372,289.14
  5. Step 5: Solve for x
    x = 45,466,372,289.14/331,351.52
  6. Step 6: Final answer
    x = 137,214.92

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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.