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Finding the Fourth Proportional to 996, 1,374.54 and 582

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Solution

The fourth proportional to 996, 1,374.54 and 582 is: 803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    996 : 1,374.54 = 582 : x
  2. Step 2: Convert to fraction form
    996/1,374.54 = 582/x
  3. Step 3: Cross multiply
    996x = 1,374.54 × 582
  4. Step 4: Simplify right side
    996x = 799,982.28
  5. Step 5: Solve for x
    x = 799,982.28/996
  6. Step 6: Final answer
    x = 803.20

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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.