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Finding the Fourth Proportional to 622,706.62, 859,007.77 and 393,180.97

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Solution

The fourth proportional to 622,706.62, 859,007.77 and 393,180.97 is: 542,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,706.62 : 859,007.77 = 393,180.97 : x
  2. Step 2: Convert to fraction form
    622,706.62/859,007.77 = 393,180.97/x
  3. Step 3: Cross multiply
    622,706.62x = 859,007.77 × 393,180.97
  4. Step 4: Simplify right side
    622,706.62x = 337,745,508,246.14
  5. Step 5: Solve for x
    x = 337,745,508,246.14/622,706.62
  6. Step 6: Final answer
    x = 542,383.04

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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.