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Finding the Fourth Proportional to 279,673.74, 419,348.61 and 191,034.36

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Solution

The fourth proportional to 279,673.74, 419,348.61 and 191,034.36 is: 286,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,673.74 : 419,348.61 = 191,034.36 : x
  2. Step 2: Convert to fraction form
    279,673.74/419,348.61 = 191,034.36/x
  3. Step 3: Cross multiply
    279,673.74x = 419,348.61 × 191,034.36
  4. Step 4: Simplify right side
    279,673.74x = 80,109,993,328.24
  5. Step 5: Solve for x
    x = 80,109,993,328.24/279,673.74
  6. Step 6: Final answer
    x = 286,440.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.