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Finding the Fourth Proportional to 48,939.20, 73,408.80 and 17,796.80

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Solution

The fourth proportional to 48,939.20, 73,408.80 and 17,796.80 is: 26,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,939.20 : 73,408.80 = 17,796.80 : x
  2. Step 2: Convert to fraction form
    48,939.20/73,408.80 = 17,796.80/x
  3. Step 3: Cross multiply
    48,939.20x = 73,408.80 × 17,796.80
  4. Step 4: Simplify right side
    48,939.20x = 1,306,441,731.84
  5. Step 5: Solve for x
    x = 1,306,441,731.84/48,939.20
  6. Step 6: Final answer
    x = 26,695.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.