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Finding the Fourth Proportional to 352,391.88, 486,301.05 and 191,246.87

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Solution

The fourth proportional to 352,391.88, 486,301.05 and 191,246.87 is: 263,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,391.88 : 486,301.05 = 191,246.87 : x
  2. Step 2: Convert to fraction form
    352,391.88/486,301.05 = 191,246.87/x
  3. Step 3: Cross multiply
    352,391.88x = 486,301.05 × 191,246.87
  4. Step 4: Simplify right side
    352,391.88x = 93,003,554,905.97
  5. Step 5: Solve for x
    x = 93,003,554,905.97/352,391.88
  6. Step 6: Final answer
    x = 263,920.82

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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.