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Finding the Fourth Proportional to 13,792.11, 20,698.43 and 6,775.89

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Solution

The fourth proportional to 13,792.11, 20,698.43 and 6,775.89 is: 10,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.11 : 20,698.43 = 6,775.89 : x
  2. Step 2: Convert to fraction form
    13,792.11/20,698.43 = 6,775.89/x
  3. Step 3: Cross multiply
    13,792.11x = 20,698.43 × 6,775.89
  4. Step 4: Simplify right side
    13,792.11x = 140,250,250.97
  5. Step 5: Solve for x
    x = 140,250,250.97/13,792.11
  6. Step 6: Final answer
    x = 10,168.88

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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.