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Finding the Fourth Proportional to 18,803.86, 25,949.31 and 11,250.49

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Solution

The fourth proportional to 18,803.86, 25,949.31 and 11,250.49 is: 15,525.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.86 : 25,949.31 = 11,250.49 : x
  2. Step 2: Convert to fraction form
    18,803.86/25,949.31 = 11,250.49/x
  3. Step 3: Cross multiply
    18,803.86x = 25,949.31 × 11,250.49
  4. Step 4: Simplify right side
    18,803.86x = 291,942,452.66
  5. Step 5: Solve for x
    x = 291,942,452.66/18,803.86
  6. Step 6: Final answer
    x = 15,525.67

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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.