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Finding the Fourth Proportional to 366,309.20, 548,807.70 and 313,821.20

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Solution

The fourth proportional to 366,309.20, 548,807.70 and 313,821.20 is: 470,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,309.20 : 548,807.70 = 313,821.20 : x
  2. Step 2: Convert to fraction form
    366,309.20/548,807.70 = 313,821.20/x
  3. Step 3: Cross multiply
    366,309.20x = 548,807.70 × 313,821.20
  4. Step 4: Simplify right side
    366,309.20x = 172,227,490,983.24
  5. Step 5: Solve for x
    x = 172,227,490,983.24/366,309.20
  6. Step 6: Final answer
    x = 470,169.71

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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.