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Finding the Fourth Proportional to 1,474.75, 2,212.26 and 705.25

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Solution

The fourth proportional to 1,474.75, 2,212.26 and 705.25 is: 1,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.75 : 2,212.26 = 705.25 : x
  2. Step 2: Convert to fraction form
    1,474.75/2,212.26 = 705.25/x
  3. Step 3: Cross multiply
    1,474.75x = 2,212.26 × 705.25
  4. Step 4: Simplify right side
    1,474.75x = 1,560,196.37
  5. Step 5: Solve for x
    x = 1,560,196.37/1,474.75
  6. Step 6: Final answer
    x = 1,057.94

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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.