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Finding the Fourth Proportional to 347,395.86, 479,338.16 and 194,440.73

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Solution

The fourth proportional to 347,395.86, 479,338.16 and 194,440.73 is: 268,290.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,395.86 : 479,338.16 = 194,440.73 : x
  2. Step 2: Convert to fraction form
    347,395.86/479,338.16 = 194,440.73/x
  3. Step 3: Cross multiply
    347,395.86x = 479,338.16 × 194,440.73
  4. Step 4: Simplify right side
    347,395.86x = 93,202,858,378.36
  5. Step 5: Solve for x
    x = 93,202,858,378.36/347,395.86
  6. Step 6: Final answer
    x = 268,290.07

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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.