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Finding the Fourth Proportional to 26,978.24, 37,227.84 and 15,040.64

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Solution

The fourth proportional to 26,978.24, 37,227.84 and 15,040.64 is: 20,754.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.24 : 37,227.84 = 15,040.64 : x
  2. Step 2: Convert to fraction form
    26,978.24/37,227.84 = 15,040.64/x
  3. Step 3: Cross multiply
    26,978.24x = 37,227.84 × 15,040.64
  4. Step 4: Simplify right side
    26,978.24x = 559,930,539.42
  5. Step 5: Solve for x
    x = 559,930,539.42/26,978.24
  6. Step 6: Final answer
    x = 20,754.90

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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.