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Finding the Fourth Proportional to 16,919.92, 25,385.07 and 7,567.81

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Solution

The fourth proportional to 16,919.92, 25,385.07 and 7,567.81 is: 11,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.92 : 25,385.07 = 7,567.81 : x
  2. Step 2: Convert to fraction form
    16,919.92/25,385.07 = 7,567.81/x
  3. Step 3: Cross multiply
    16,919.92x = 25,385.07 × 7,567.81
  4. Step 4: Simplify right side
    16,919.92x = 192,109,386.60
  5. Step 5: Solve for x
    x = 192,109,386.60/16,919.92
  6. Step 6: Final answer
    x = 11,354.04

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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.