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Finding the Fourth Proportional to 16,551.66, 24,836.76 and 12,861.30

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Solution

The fourth proportional to 16,551.66, 24,836.76 and 12,861.30 is: 19,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,551.66 : 24,836.76 = 12,861.30 : x
  2. Step 2: Convert to fraction form
    16,551.66/24,836.76 = 12,861.30/x
  3. Step 3: Cross multiply
    16,551.66x = 24,836.76 × 12,861.30
  4. Step 4: Simplify right side
    16,551.66x = 319,433,021.39
  5. Step 5: Solve for x
    x = 319,433,021.39/16,551.66
  6. Step 6: Final answer
    x = 19,299.15

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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.