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Finding the Fourth Proportional to 13,571.71, 18,732.68 and 8,266.48

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Solution

The fourth proportional to 13,571.71, 18,732.68 and 8,266.48 is: 11,410.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.71 : 18,732.68 = 8,266.48 : x
  2. Step 2: Convert to fraction form
    13,571.71/18,732.68 = 8,266.48/x
  3. Step 3: Cross multiply
    13,571.71x = 18,732.68 × 8,266.48
  4. Step 4: Simplify right side
    13,571.71x = 154,853,324.57
  5. Step 5: Solve for x
    x = 154,853,324.57/13,571.71
  6. Step 6: Final answer
    x = 11,410.01

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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.