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Finding the Fourth Proportional to 691,563.52, 954,451.20 and 405,197.92

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Solution

The fourth proportional to 691,563.52, 954,451.20 and 405,197.92 is: 559,227.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,563.52 : 954,451.20 = 405,197.92 : x
  2. Step 2: Convert to fraction form
    691,563.52/954,451.20 = 405,197.92/x
  3. Step 3: Cross multiply
    691,563.52x = 954,451.20 × 405,197.92
  4. Step 4: Simplify right side
    691,563.52x = 386,741,640,981.50
  5. Step 5: Solve for x
    x = 386,741,640,981.50/691,563.52
  6. Step 6: Final answer
    x = 559,227.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.