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Finding the Fourth Proportional to 366,917.10, 550,375.65 and 328,425.90

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Solution

The fourth proportional to 366,917.10, 550,375.65 and 328,425.90 is: 492,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,917.10 : 550,375.65 = 328,425.90 : x
  2. Step 2: Convert to fraction form
    366,917.10/550,375.65 = 328,425.90/x
  3. Step 3: Cross multiply
    366,917.10x = 550,375.65 × 328,425.90
  4. Step 4: Simplify right side
    366,917.10x = 180,757,618,189.34
  5. Step 5: Solve for x
    x = 180,757,618,189.34/366,917.10
  6. Step 6: Final answer
    x = 492,638.85

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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.