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Finding the Fourth Proportional to 19,361.97, 28,993.68 and 13,522.68

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Solution

The fourth proportional to 19,361.97, 28,993.68 and 13,522.68 is: 20,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.97 : 28,993.68 = 13,522.68 : x
  2. Step 2: Convert to fraction form
    19,361.97/28,993.68 = 13,522.68/x
  3. Step 3: Cross multiply
    19,361.97x = 28,993.68 × 13,522.68
  4. Step 4: Simplify right side
    19,361.97x = 392,072,256.66
  5. Step 5: Solve for x
    x = 392,072,256.66/19,361.97
  6. Step 6: Final answer
    x = 20,249.61

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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.