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Finding the Fourth Proportional to 18,649.44, 25,718.01 and 11,932.62

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Solution

The fourth proportional to 18,649.44, 25,718.01 and 11,932.62 is: 16,455.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.44 : 25,718.01 = 11,932.62 : x
  2. Step 2: Convert to fraction form
    18,649.44/25,718.01 = 11,932.62/x
  3. Step 3: Cross multiply
    18,649.44x = 25,718.01 × 11,932.62
  4. Step 4: Simplify right side
    18,649.44x = 306,883,240.49
  5. Step 5: Solve for x
    x = 306,883,240.49/18,649.44
  6. Step 6: Final answer
    x = 16,455.36

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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.