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Finding the Fourth Proportional to 404,346.80, 606,520.20 and 325,614.80

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Solution

The fourth proportional to 404,346.80, 606,520.20 and 325,614.80 is: 488,422.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,346.80 : 606,520.20 = 325,614.80 : x
  2. Step 2: Convert to fraction form
    404,346.80/606,520.20 = 325,614.80/x
  3. Step 3: Cross multiply
    404,346.80x = 606,520.20 × 325,614.80
  4. Step 4: Simplify right side
    404,346.80x = 197,491,953,618.96
  5. Step 5: Solve for x
    x = 197,491,953,618.96/404,346.80
  6. Step 6: Final answer
    x = 488,422.20

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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.