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Finding the Fourth Proportional to 16,873.16, 25,315.16 and 8,108.72

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Solution

The fourth proportional to 16,873.16, 25,315.16 and 8,108.72 is: 12,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,873.16 : 25,315.16 = 8,108.72 : x
  2. Step 2: Convert to fraction form
    16,873.16/25,315.16 = 8,108.72/x
  3. Step 3: Cross multiply
    16,873.16x = 25,315.16 × 8,108.72
  4. Step 4: Simplify right side
    16,873.16x = 205,273,544.20
  5. Step 5: Solve for x
    x = 205,273,544.20/16,873.16
  6. Step 6: Final answer
    x = 12,165.68

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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.