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Finding the Fourth Proportional to 279,136.63, 418,546.39 and 190,497.52

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Solution

The fourth proportional to 279,136.63, 418,546.39 and 190,497.52 is: 285,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,136.63 : 418,546.39 = 190,497.52 : x
  2. Step 2: Convert to fraction form
    279,136.63/418,546.39 = 190,497.52/x
  3. Step 3: Cross multiply
    279,136.63x = 418,546.39 × 190,497.52
  4. Step 4: Simplify right side
    279,136.63x = 79,732,049,299.95
  5. Step 5: Solve for x
    x = 79,732,049,299.95/279,136.63
  6. Step 6: Final answer
    x = 285,638.07

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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.