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Finding the Fourth Proportional to 404,517, 558,233.70 and 225,669

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Solution

The fourth proportional to 404,517, 558,233.70 and 225,669 is: 311,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,517 : 558,233.70 = 225,669 : x
  2. Step 2: Convert to fraction form
    404,517/558,233.70 = 225,669/x
  3. Step 3: Cross multiply
    404,517x = 558,233.70 × 225,669
  4. Step 4: Simplify right side
    404,517x = 125,976,040,845.30
  5. Step 5: Solve for x
    x = 125,976,040,845.30/404,517
  6. Step 6: Final answer
    x = 311,423.35

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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.