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Finding the Fourth Proportional to 11,069.90, 16,581.42 and 8,952.44

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Solution

The fourth proportional to 11,069.90, 16,581.42 and 8,952.44 is: 13,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,069.90 : 16,581.42 = 8,952.44 : x
  2. Step 2: Convert to fraction form
    11,069.90/16,581.42 = 8,952.44/x
  3. Step 3: Cross multiply
    11,069.90x = 16,581.42 × 8,952.44
  4. Step 4: Simplify right side
    11,069.90x = 148,444,084.76
  5. Step 5: Solve for x
    x = 148,444,084.76/11,069.90
  6. Step 6: Final answer
    x = 13,409.71

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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.