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Finding the Fourth Proportional to 366,920.95, 550,381.43 and 331,491.55

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Solution

The fourth proportional to 366,920.95, 550,381.43 and 331,491.55 is: 497,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,920.95 : 550,381.43 = 331,491.55 : x
  2. Step 2: Convert to fraction form
    366,920.95/550,381.43 = 331,491.55/x
  3. Step 3: Cross multiply
    366,920.95x = 550,381.43 × 331,491.55
  4. Step 4: Simplify right side
    366,920.95x = 182,446,793,321.92
  5. Step 5: Solve for x
    x = 182,446,793,321.92/366,920.95
  6. Step 6: Final answer
    x = 497,237.33

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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.