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Finding the Fourth Proportional to 352,859.56, 486,940.21 and 191,717.15

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Solution

The fourth proportional to 352,859.56, 486,940.21 and 191,717.15 is: 264,566.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,859.56 : 486,940.21 = 191,717.15 : x
  2. Step 2: Convert to fraction form
    352,859.56/486,940.21 = 191,717.15/x
  3. Step 3: Cross multiply
    352,859.56x = 486,940.21 × 191,717.15
  4. Step 4: Simplify right side
    352,859.56x = 93,354,786,367.61
  5. Step 5: Solve for x
    x = 93,354,786,367.61/352,859.56
  6. Step 6: Final answer
    x = 264,566.41

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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.