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Finding the Fourth Proportional to 366,934.20, 550,401.30 and 316,195.80

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Solution

The fourth proportional to 366,934.20, 550,401.30 and 316,195.80 is: 474,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,934.20 : 550,401.30 = 316,195.80 : x
  2. Step 2: Convert to fraction form
    366,934.20/550,401.30 = 316,195.80/x
  3. Step 3: Cross multiply
    366,934.20x = 550,401.30 × 316,195.80
  4. Step 4: Simplify right side
    366,934.20x = 174,034,579,374.54
  5. Step 5: Solve for x
    x = 174,034,579,374.54/366,934.20
  6. Step 6: Final answer
    x = 474,293.70

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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.