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Finding the Fourth Proportional to 331,352.52, 496,991.74 and 91,484.43

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Solution

The fourth proportional to 331,352.52, 496,991.74 and 91,484.43 is: 137,216.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,352.52 : 496,991.74 = 91,484.43 : x
  2. Step 2: Convert to fraction form
    331,352.52/496,991.74 = 91,484.43/x
  3. Step 3: Cross multiply
    331,352.52x = 496,991.74 × 91,484.43
  4. Step 4: Simplify right side
    331,352.52x = 45,467,006,048.61
  5. Step 5: Solve for x
    x = 45,467,006,048.61/331,352.52
  6. Step 6: Final answer
    x = 137,216.42

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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.