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Finding the Fourth Proportional to 70,768.44, 106,156.44 and 18,178.38

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Solution

The fourth proportional to 70,768.44, 106,156.44 and 18,178.38 is: 27,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,768.44 : 106,156.44 = 18,178.38 : x
  2. Step 2: Convert to fraction form
    70,768.44/106,156.44 = 18,178.38/x
  3. Step 3: Cross multiply
    70,768.44x = 106,156.44 × 18,178.38
  4. Step 4: Simplify right side
    70,768.44x = 1,929,752,105.77
  5. Step 5: Solve for x
    x = 1,929,752,105.77/70,768.44
  6. Step 6: Final answer
    x = 27,268.54

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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.