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Finding the Fourth Proportional to 352,446.78, 486,376.95 and 191,301.79

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Solution

The fourth proportional to 352,446.78, 486,376.95 and 191,301.79 is: 263,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,446.78 : 486,376.95 = 191,301.79 : x
  2. Step 2: Convert to fraction form
    352,446.78/486,376.95 = 191,301.79/x
  3. Step 3: Cross multiply
    352,446.78x = 486,376.95 × 191,301.79
  4. Step 4: Simplify right side
    352,446.78x = 93,044,780,879.17
  5. Step 5: Solve for x
    x = 93,044,780,879.17/352,446.78
  6. Step 6: Final answer
    x = 263,996.68

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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.