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Finding the Fourth Proportional to 18,994.50, 26,213.22 and 10,611

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Solution

The fourth proportional to 18,994.50, 26,213.22 and 10,611 is: 14,643.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.50 : 26,213.22 = 10,611 : x
  2. Step 2: Convert to fraction form
    18,994.50/26,213.22 = 10,611/x
  3. Step 3: Cross multiply
    18,994.50x = 26,213.22 × 10,611
  4. Step 4: Simplify right side
    18,994.50x = 278,148,477.42
  5. Step 5: Solve for x
    x = 278,148,477.42/18,994.50
  6. Step 6: Final answer
    x = 14,643.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.