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Finding the Fourth Proportional to 19,993.44, 27,592.08 and 17,172.21

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Solution

The fourth proportional to 19,993.44, 27,592.08 and 17,172.21 is: 23,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.44 : 27,592.08 = 17,172.21 : x
  2. Step 2: Convert to fraction form
    19,993.44/27,592.08 = 17,172.21/x
  3. Step 3: Cross multiply
    19,993.44x = 27,592.08 × 17,172.21
  4. Step 4: Simplify right side
    19,993.44x = 473,816,992.10
  5. Step 5: Solve for x
    x = 473,816,992.10/19,993.44
  6. Step 6: Final answer
    x = 23,698.62

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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.