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Finding the Fourth Proportional to 1,178.44, 1,764.02 and 1,003.48

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Solution

The fourth proportional to 1,178.44, 1,764.02 and 1,003.48 is: 1,502.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.44 : 1,764.02 = 1,003.48 : x
  2. Step 2: Convert to fraction form
    1,178.44/1,764.02 = 1,003.48/x
  3. Step 3: Cross multiply
    1,178.44x = 1,764.02 × 1,003.48
  4. Step 4: Simplify right side
    1,178.44x = 1,770,163.99
  5. Step 5: Solve for x
    x = 1,770,163.99/1,178.44
  6. Step 6: Final answer
    x = 1,502.12

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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.