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Finding the Fourth Proportional to 18,351.25, 27,520.80 and 7,101.37

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Solution

The fourth proportional to 18,351.25, 27,520.80 and 7,101.37 is: 10,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.25 : 27,520.80 = 7,101.37 : x
  2. Step 2: Convert to fraction form
    18,351.25/27,520.80 = 7,101.37/x
  3. Step 3: Cross multiply
    18,351.25x = 27,520.80 × 7,101.37
  4. Step 4: Simplify right side
    18,351.25x = 195,435,383.50
  5. Step 5: Solve for x
    x = 195,435,383.50/18,351.25
  6. Step 6: Final answer
    x = 10,649.70

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1.5x scale

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.