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Finding the Fourth Proportional to 1,173.09, 1,758.76 and 556.44

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Solution

The fourth proportional to 1,173.09, 1,758.76 and 556.44 is: 834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.09 : 1,758.76 = 556.44 : x
  2. Step 2: Convert to fraction form
    1,173.09/1,758.76 = 556.44/x
  3. Step 3: Cross multiply
    1,173.09x = 1,758.76 × 556.44
  4. Step 4: Simplify right side
    1,173.09x = 978,644.41
  5. Step 5: Solve for x
    x = 978,644.41/1,173.09
  6. Step 6: Final answer
    x = 834.24

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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.