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Finding the Fourth Proportional to 445,579.20, 668,204.16 and 192,896.64

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Solution

The fourth proportional to 445,579.20, 668,204.16 and 192,896.64 is: 289,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,579.20 : 668,204.16 = 192,896.64 : x
  2. Step 2: Convert to fraction form
    445,579.20/668,204.16 = 192,896.64/x
  3. Step 3: Cross multiply
    445,579.20x = 668,204.16 × 192,896.64
  4. Step 4: Simplify right side
    445,579.20x = 128,894,337,298.02
  5. Step 5: Solve for x
    x = 128,894,337,298.02/445,579.20
  6. Step 6: Final answer
    x = 289,273.69

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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.