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Finding the Fourth Proportional to 1,193.07, 1,786.75 and 704.64

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Solution

The fourth proportional to 1,193.07, 1,786.75 and 704.64 is: 1,055.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.07 : 1,786.75 = 704.64 : x
  2. Step 2: Convert to fraction form
    1,193.07/1,786.75 = 704.64/x
  3. Step 3: Cross multiply
    1,193.07x = 1,786.75 × 704.64
  4. Step 4: Simplify right side
    1,193.07x = 1,259,015.52
  5. Step 5: Solve for x
    x = 1,259,015.52/1,193.07
  6. Step 6: Final answer
    x = 1,055.27

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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.