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Finding the Fourth Proportional to 626,391.82, 864,791.94 and 411,901.80

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Solution

The fourth proportional to 626,391.82, 864,791.94 and 411,901.80 is: 568,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,391.82 : 864,791.94 = 411,901.80 : x
  2. Step 2: Convert to fraction form
    626,391.82/864,791.94 = 411,901.80/x
  3. Step 3: Cross multiply
    626,391.82x = 864,791.94 × 411,901.80
  4. Step 4: Simplify right side
    626,391.82x = 356,209,356,711.49
  5. Step 5: Solve for x
    x = 356,209,356,711.49/626,391.82
  6. Step 6: Final answer
    x = 568,668.60

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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.