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Finding the Fourth Proportional to 422,717.04, 629,958.24 and 409,901.04

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Solution

The fourth proportional to 422,717.04, 629,958.24 and 409,901.04 is: 610,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,717.04 : 629,958.24 = 409,901.04 : x
  2. Step 2: Convert to fraction form
    422,717.04/629,958.24 = 409,901.04/x
  3. Step 3: Cross multiply
    422,717.04x = 629,958.24 × 409,901.04
  4. Step 4: Simplify right side
    422,717.04x = 258,220,537,732.57
  5. Step 5: Solve for x
    x = 258,220,537,732.57/422,717.04
  6. Step 6: Final answer
    x = 610,859.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.