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Finding the Fourth Proportional to 13,496.17, 20,220.49 and 12,028.45

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Solution

The fourth proportional to 13,496.17, 20,220.49 and 12,028.45 is: 18,021.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.17 : 20,220.49 = 12,028.45 : x
  2. Step 2: Convert to fraction form
    13,496.17/20,220.49 = 12,028.45/x
  3. Step 3: Cross multiply
    13,496.17x = 20,220.49 × 12,028.45
  4. Step 4: Simplify right side
    13,496.17x = 243,221,087.68
  5. Step 5: Solve for x
    x = 243,221,087.68/13,496.17
  6. Step 6: Final answer
    x = 18,021.49

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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.