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Finding the Fourth Proportional to 1,192.64, 1,785 and 796.04

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Solution

The fourth proportional to 1,192.64, 1,785 and 796.04 is: 1,191.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.64 : 1,785 = 796.04 : x
  2. Step 2: Convert to fraction form
    1,192.64/1,785 = 796.04/x
  3. Step 3: Cross multiply
    1,192.64x = 1,785 × 796.04
  4. Step 4: Simplify right side
    1,192.64x = 1,420,931.40
  5. Step 5: Solve for x
    x = 1,420,931.40/1,192.64
  6. Step 6: Final answer
    x = 1,191.42

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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.