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Finding the Fourth Proportional to 14,424.84, 19,907.22 and 8,136.84

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Solution

The fourth proportional to 14,424.84, 19,907.22 and 8,136.84 is: 11,229.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,424.84 : 19,907.22 = 8,136.84 : x
  2. Step 2: Convert to fraction form
    14,424.84/19,907.22 = 8,136.84/x
  3. Step 3: Cross multiply
    14,424.84x = 19,907.22 × 8,136.84
  4. Step 4: Simplify right side
    14,424.84x = 161,981,863.98
  5. Step 5: Solve for x
    x = 161,981,863.98/14,424.84
  6. Step 6: Final answer
    x = 11,229.37

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1.5x scale

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.