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Finding the Fourth Proportional to 16,767.12, 25,169.13 and 14,166.78

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Solution

The fourth proportional to 16,767.12, 25,169.13 and 14,166.78 is: 21,265.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,767.12 : 25,169.13 = 14,166.78 : x
  2. Step 2: Convert to fraction form
    16,767.12/25,169.13 = 14,166.78/x
  3. Step 3: Cross multiply
    16,767.12x = 25,169.13 × 14,166.78
  4. Step 4: Simplify right side
    16,767.12x = 356,565,527.50
  5. Step 5: Solve for x
    x = 356,565,527.50/16,767.12
  6. Step 6: Final answer
    x = 21,265.76

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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.