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Finding the Fourth Proportional to 366,918.20, 550,377.30 and 316,179.80

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Solution

The fourth proportional to 366,918.20, 550,377.30 and 316,179.80 is: 474,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,918.20 : 550,377.30 = 316,179.80 : x
  2. Step 2: Convert to fraction form
    366,918.20/550,377.30 = 316,179.80/x
  3. Step 3: Cross multiply
    366,918.20x = 550,377.30 × 316,179.80
  4. Step 4: Simplify right side
    366,918.20x = 174,018,184,638.54
  5. Step 5: Solve for x
    x = 174,018,184,638.54/366,918.20
  6. Step 6: Final answer
    x = 474,269.70

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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.