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Finding the Fourth Proportional to 1,611.92, 2,418.04 and 746.48

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Solution

The fourth proportional to 1,611.92, 2,418.04 and 746.48 is: 1,119.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.92 : 2,418.04 = 746.48 : x
  2. Step 2: Convert to fraction form
    1,611.92/2,418.04 = 746.48/x
  3. Step 3: Cross multiply
    1,611.92x = 2,418.04 × 746.48
  4. Step 4: Simplify right side
    1,611.92x = 1,805,018.50
  5. Step 5: Solve for x
    x = 1,805,018.50/1,611.92
  6. Step 6: Final answer
    x = 1,119.79

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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.