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Finding the Fourth Proportional to 18,401.25, 25,393.74 and 10,949.25

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Solution

The fourth proportional to 18,401.25, 25,393.74 and 10,949.25 is: 15,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.25 : 25,393.74 = 10,949.25 : x
  2. Step 2: Convert to fraction form
    18,401.25/25,393.74 = 10,949.25/x
  3. Step 3: Cross multiply
    18,401.25x = 25,393.74 × 10,949.25
  4. Step 4: Simplify right side
    18,401.25x = 278,042,407.70
  5. Step 5: Solve for x
    x = 278,042,407.70/18,401.25
  6. Step 6: Final answer
    x = 15,109.97

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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.