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Finding the Fourth Proportional to 8,913.11, 13,361.54 and 3,716.15

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Solution

The fourth proportional to 8,913.11, 13,361.54 and 3,716.15 is: 5,570.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.11 : 13,361.54 = 3,716.15 : x
  2. Step 2: Convert to fraction form
    8,913.11/13,361.54 = 3,716.15/x
  3. Step 3: Cross multiply
    8,913.11x = 13,361.54 × 3,716.15
  4. Step 4: Simplify right side
    8,913.11x = 49,653,401.48
  5. Step 5: Solve for x
    x = 49,653,401.48/8,913.11
  6. Step 6: Final answer
    x = 5,570.83

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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.