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Finding the Fourth Proportional to 14,704.20, 22,041.90 and 7,687.80

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Solution

The fourth proportional to 14,704.20, 22,041.90 and 7,687.80 is: 11,524.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,704.20 : 22,041.90 = 7,687.80 : x
  2. Step 2: Convert to fraction form
    14,704.20/22,041.90 = 7,687.80/x
  3. Step 3: Cross multiply
    14,704.20x = 22,041.90 × 7,687.80
  4. Step 4: Simplify right side
    14,704.20x = 169,453,718.82
  5. Step 5: Solve for x
    x = 169,453,718.82/14,704.20
  6. Step 6: Final answer
    x = 11,524.17

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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.