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Finding the Fourth Proportional to 923.28, 1,274.08 and 573.96

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Solution

The fourth proportional to 923.28, 1,274.08 and 573.96 is: 792.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.28 : 1,274.08 = 573.96 : x
  2. Step 2: Convert to fraction form
    923.28/1,274.08 = 573.96/x
  3. Step 3: Cross multiply
    923.28x = 1,274.08 × 573.96
  4. Step 4: Simplify right side
    923.28x = 731,270.96
  5. Step 5: Solve for x
    x = 731,270.96/923.28
  6. Step 6: Final answer
    x = 792.04

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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.