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Finding the Fourth Proportional to 18,625.97, 25,703.60 and 13,867.17

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Solution

The fourth proportional to 18,625.97, 25,703.60 and 13,867.17 is: 19,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.97 : 25,703.60 = 13,867.17 : x
  2. Step 2: Convert to fraction form
    18,625.97/25,703.60 = 13,867.17/x
  3. Step 3: Cross multiply
    18,625.97x = 25,703.60 × 13,867.17
  4. Step 4: Simplify right side
    18,625.97x = 356,436,121.48
  5. Step 5: Solve for x
    x = 356,436,121.48/18,625.97
  6. Step 6: Final answer
    x = 19,136.52

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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.