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Finding the Fourth Proportional to 12,167.99, 16,791.13 and 6,862.49

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Solution

The fourth proportional to 12,167.99, 16,791.13 and 6,862.49 is: 9,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.99 : 16,791.13 = 6,862.49 : x
  2. Step 2: Convert to fraction form
    12,167.99/16,791.13 = 6,862.49/x
  3. Step 3: Cross multiply
    12,167.99x = 16,791.13 × 6,862.49
  4. Step 4: Simplify right side
    12,167.99x = 115,228,877.76
  5. Step 5: Solve for x
    x = 115,228,877.76/12,167.99
  6. Step 6: Final answer
    x = 9,469.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.