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Finding the Fourth Proportional to 17,861.65, 26,787.01 and 12,350.41

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Solution

The fourth proportional to 17,861.65, 26,787.01 and 12,350.41 is: 18,521.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,861.65 : 26,787.01 = 12,350.41 : x
  2. Step 2: Convert to fraction form
    17,861.65/26,787.01 = 12,350.41/x
  3. Step 3: Cross multiply
    17,861.65x = 26,787.01 × 12,350.41
  4. Step 4: Simplify right side
    17,861.65x = 330,830,494.42
  5. Step 5: Solve for x
    x = 330,830,494.42/17,861.65
  6. Step 6: Final answer
    x = 18,521.83

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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.