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Finding the Fourth Proportional to 20,757.25, 28,676.19 and 13,604.14

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Solution

The fourth proportional to 20,757.25, 28,676.19 and 13,604.14 is: 18,794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.25 : 28,676.19 = 13,604.14 : x
  2. Step 2: Convert to fraction form
    20,757.25/28,676.19 = 13,604.14/x
  3. Step 3: Cross multiply
    20,757.25x = 28,676.19 × 13,604.14
  4. Step 4: Simplify right side
    20,757.25x = 390,114,903.43
  5. Step 5: Solve for x
    x = 390,114,903.43/20,757.25
  6. Step 6: Final answer
    x = 18,794.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.