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Finding the Fourth Proportional to 404,929,696.05, 558,800,198.28 and 219,286,463.49

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Solution

The fourth proportional to 404,929,696.05, 558,800,198.28 and 219,286,463.49 is: 302,613,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,929,696.05 : 558,800,198.28 = 219,286,463.49 : x
  2. Step 2: Convert to fraction form
    404,929,696.05/558,800,198.28 = 219,286,463.49/x
  3. Step 3: Cross multiply
    404,929,696.05x = 558,800,198.28 × 219,286,463.49
  4. Step 4: Simplify right side
    404,929,696.05x = 122,537,319,278,331,984
  5. Step 5: Solve for x
    x = 122,537,319,278,331,984/404,929,696.05
  6. Step 6: Final answer
    x = 302,613,812.90

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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.