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Finding the Fourth Proportional to 13,675.97, 18,863.47 and 8,373.41

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Solution

The fourth proportional to 13,675.97, 18,863.47 and 8,373.41 is: 11,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.97 : 18,863.47 = 8,373.41 : x
  2. Step 2: Convert to fraction form
    13,675.97/18,863.47 = 8,373.41/x
  3. Step 3: Cross multiply
    13,675.97x = 18,863.47 × 8,373.41
  4. Step 4: Simplify right side
    13,675.97x = 157,951,568.33
  5. Step 5: Solve for x
    x = 157,951,568.33/13,675.97
  6. Step 6: Final answer
    x = 11,549.57

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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.