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Finding the Fourth Proportional to 722,181.57, 996,610.51 and 399,891.66

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Solution

The fourth proportional to 722,181.57, 996,610.51 and 399,891.66 is: 551,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,181.57 : 996,610.51 = 399,891.66 : x
  2. Step 2: Convert to fraction form
    722,181.57/996,610.51 = 399,891.66/x
  3. Step 3: Cross multiply
    722,181.57x = 996,610.51 × 399,891.66
  4. Step 4: Simplify right side
    722,181.57x = 398,536,229,658.19
  5. Step 5: Solve for x
    x = 398,536,229,658.19/722,181.57
  6. Step 6: Final answer
    x = 551,850.46

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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.