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Finding the Fourth Proportional to 1,110.44, 1,532.34 and 668.48

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Solution

The fourth proportional to 1,110.44, 1,532.34 and 668.48 is: 922.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.44 : 1,532.34 = 668.48 : x
  2. Step 2: Convert to fraction form
    1,110.44/1,532.34 = 668.48/x
  3. Step 3: Cross multiply
    1,110.44x = 1,532.34 × 668.48
  4. Step 4: Simplify right side
    1,110.44x = 1,024,338.64
  5. Step 5: Solve for x
    x = 1,024,338.64/1,110.44
  6. Step 6: Final answer
    x = 922.46

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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.