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Finding the Fourth Proportional to 10,900.89, 16,351.32 and 2,692.89

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Solution

The fourth proportional to 10,900.89, 16,351.32 and 2,692.89 is: 4,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.89 : 16,351.32 = 2,692.89 : x
  2. Step 2: Convert to fraction form
    10,900.89/16,351.32 = 2,692.89/x
  3. Step 3: Cross multiply
    10,900.89x = 16,351.32 × 2,692.89
  4. Step 4: Simplify right side
    10,900.89x = 44,032,306.11
  5. Step 5: Solve for x
    x = 44,032,306.11/10,900.89
  6. Step 6: Final answer
    x = 4,039.33

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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.