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Finding the Fourth Proportional to 18,644.67, 25,718.36 and 11,927.94

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Solution

The fourth proportional to 18,644.67, 25,718.36 and 11,927.94 is: 16,453.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.67 : 25,718.36 = 11,927.94 : x
  2. Step 2: Convert to fraction form
    18,644.67/25,718.36 = 11,927.94/x
  3. Step 3: Cross multiply
    18,644.67x = 25,718.36 × 11,927.94
  4. Step 4: Simplify right side
    18,644.67x = 306,766,995.34
  5. Step 5: Solve for x
    x = 306,766,995.34/18,644.67
  6. Step 6: Final answer
    x = 16,453.33

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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.