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Finding the Fourth Proportional to 11,290.46, 16,936.46 and 3,392.64

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Solution

The fourth proportional to 11,290.46, 16,936.46 and 3,392.64 is: 5,089.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.46 : 16,936.46 = 3,392.64 : x
  2. Step 2: Convert to fraction form
    11,290.46/16,936.46 = 3,392.64/x
  3. Step 3: Cross multiply
    11,290.46x = 16,936.46 × 3,392.64
  4. Step 4: Simplify right side
    11,290.46x = 57,459,294.69
  5. Step 5: Solve for x
    x = 57,459,294.69/11,290.46
  6. Step 6: Final answer
    x = 5,089.19

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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.