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Finding the Fourth Proportional to 18,846.24, 25,978.04 and 15,057.48

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Solution

The fourth proportional to 18,846.24, 25,978.04 and 15,057.48 is: 20,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.24 : 25,978.04 = 15,057.48 : x
  2. Step 2: Convert to fraction form
    18,846.24/25,978.04 = 15,057.48/x
  3. Step 3: Cross multiply
    18,846.24x = 25,978.04 × 15,057.48
  4. Step 4: Simplify right side
    18,846.24x = 391,163,817.74
  5. Step 5: Solve for x
    x = 391,163,817.74/18,846.24
  6. Step 6: Final answer
    x = 20,755.54

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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.