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Finding the Fourth Proportional to 16,813.40, 25,212.81 and 5,717.11

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Solution

The fourth proportional to 16,813.40, 25,212.81 and 5,717.11 is: 8,573.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,813.40 : 25,212.81 = 5,717.11 : x
  2. Step 2: Convert to fraction form
    16,813.40/25,212.81 = 5,717.11/x
  3. Step 3: Cross multiply
    16,813.40x = 25,212.81 × 5,717.11
  4. Step 4: Simplify right side
    16,813.40x = 144,144,408.18
  5. Step 5: Solve for x
    x = 144,144,408.18/16,813.40
  6. Step 6: Final answer
    x = 8,573.19

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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.