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Finding the Fourth Proportional to 26,611.80, 39,920.79 and 8,844.06

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Solution

The fourth proportional to 26,611.80, 39,920.79 and 8,844.06 is: 13,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,611.80 : 39,920.79 = 8,844.06 : x
  2. Step 2: Convert to fraction form
    26,611.80/39,920.79 = 8,844.06/x
  3. Step 3: Cross multiply
    26,611.80x = 39,920.79 × 8,844.06
  4. Step 4: Simplify right side
    26,611.80x = 353,061,862.01
  5. Step 5: Solve for x
    x = 353,061,862.01/26,611.80
  6. Step 6: Final answer
    x = 13,267.12

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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.