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Finding the Fourth Proportional to 2,193.66, 3,290.91 and 713.25

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Solution

The fourth proportional to 2,193.66, 3,290.91 and 713.25 is: 1,070.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.66 : 3,290.91 = 713.25 : x
  2. Step 2: Convert to fraction form
    2,193.66/3,290.91 = 713.25/x
  3. Step 3: Cross multiply
    2,193.66x = 3,290.91 × 713.25
  4. Step 4: Simplify right side
    2,193.66x = 2,347,241.56
  5. Step 5: Solve for x
    x = 2,347,241.56/2,193.66
  6. Step 6: Final answer
    x = 1,070.01

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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.