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Finding the Fourth Proportional to 18,615.21, 27,916.82 and 6,132.27

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Solution

The fourth proportional to 18,615.21, 27,916.82 and 6,132.27 is: 9,196.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.21 : 27,916.82 = 6,132.27 : x
  2. Step 2: Convert to fraction form
    18,615.21/27,916.82 = 6,132.27/x
  3. Step 3: Cross multiply
    18,615.21x = 27,916.82 × 6,132.27
  4. Step 4: Simplify right side
    18,615.21x = 171,193,447.12
  5. Step 5: Solve for x
    x = 171,193,447.12/18,615.21
  6. Step 6: Final answer
    x = 9,196.43

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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.