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Finding the Fourth Proportional to 1,173.29, 1,617.24 and 963.11

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Solution

The fourth proportional to 1,173.29, 1,617.24 and 963.11 is: 1,327.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.29 : 1,617.24 = 963.11 : x
  2. Step 2: Convert to fraction form
    1,173.29/1,617.24 = 963.11/x
  3. Step 3: Cross multiply
    1,173.29x = 1,617.24 × 963.11
  4. Step 4: Simplify right side
    1,173.29x = 1,557,580.02
  5. Step 5: Solve for x
    x = 1,557,580.02/1,173.29
  6. Step 6: Final answer
    x = 1,327.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.