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Finding the Fourth Proportional to 599,689.35, 826,998.77 and 392,648.78

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Solution

The fourth proportional to 599,689.35, 826,998.77 and 392,648.78 is: 541,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,689.35 : 826,998.77 = 392,648.78 : x
  2. Step 2: Convert to fraction form
    599,689.35/826,998.77 = 392,648.78/x
  3. Step 3: Cross multiply
    599,689.35x = 826,998.77 × 392,648.78
  4. Step 4: Simplify right side
    599,689.35x = 324,720,061,151.12
  5. Step 5: Solve for x
    x = 324,720,061,151.12/599,689.35
  6. Step 6: Final answer
    x = 541,480.45

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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.