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Finding the Fourth Proportional to 18,407.21, 27,614.70 and 10,513.44

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Solution

The fourth proportional to 18,407.21, 27,614.70 and 10,513.44 is: 15,772.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.21 : 27,614.70 = 10,513.44 : x
  2. Step 2: Convert to fraction form
    18,407.21/27,614.70 = 10,513.44/x
  3. Step 3: Cross multiply
    18,407.21x = 27,614.70 × 10,513.44
  4. Step 4: Simplify right side
    18,407.21x = 290,325,491.57
  5. Step 5: Solve for x
    x = 290,325,491.57/18,407.21
  6. Step 6: Final answer
    x = 15,772.38

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1.5x scale

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.