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Finding the Fourth Proportional to 984.24, 1,476.66 and 926.22

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Solution

The fourth proportional to 984.24, 1,476.66 and 926.22 is: 1,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.24 : 1,476.66 = 926.22 : x
  2. Step 2: Convert to fraction form
    984.24/1,476.66 = 926.22/x
  3. Step 3: Cross multiply
    984.24x = 1,476.66 × 926.22
  4. Step 4: Simplify right side
    984.24x = 1,367,712.03
  5. Step 5: Solve for x
    x = 1,367,712.03/984.24
  6. Step 6: Final answer
    x = 1,389.61

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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.