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Finding the Fourth Proportional to 14,451.72, 21,694.84 and 8,611.08

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Solution

The fourth proportional to 14,451.72, 21,694.84 and 8,611.08 is: 12,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,451.72 : 21,694.84 = 8,611.08 : x
  2. Step 2: Convert to fraction form
    14,451.72/21,694.84 = 8,611.08/x
  3. Step 3: Cross multiply
    14,451.72x = 21,694.84 × 8,611.08
  4. Step 4: Simplify right side
    14,451.72x = 186,816,002.83
  5. Step 5: Solve for x
    x = 186,816,002.83/14,451.72
  6. Step 6: Final answer
    x = 12,926.90

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1.5x scale

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.