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Finding the Fourth Proportional to 2,263.97, 3,396.31 and 703.80

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Solution

The fourth proportional to 2,263.97, 3,396.31 and 703.80 is: 1,055.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,263.97 : 3,396.31 = 703.80 : x
  2. Step 2: Convert to fraction form
    2,263.97/3,396.31 = 703.80/x
  3. Step 3: Cross multiply
    2,263.97x = 3,396.31 × 703.80
  4. Step 4: Simplify right side
    2,263.97x = 2,390,321.22
  5. Step 5: Solve for x
    x = 2,390,321.22/2,263.97
  6. Step 6: Final answer
    x = 1,055.81

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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.