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Finding the Fourth Proportional to 404,578.84, 558,319.99 and 220,819.10

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Solution

The fourth proportional to 404,578.84, 558,319.99 and 220,819.10 is: 304,731.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,578.84 : 558,319.99 = 220,819.10 : x
  2. Step 2: Convert to fraction form
    404,578.84/558,319.99 = 220,819.10/x
  3. Step 3: Cross multiply
    404,578.84x = 558,319.99 × 220,819.10
  4. Step 4: Simplify right side
    404,578.84x = 123,287,718,863.97
  5. Step 5: Solve for x
    x = 123,287,718,863.97/404,578.84
  6. Step 6: Final answer
    x = 304,731.01

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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.