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Finding the Fourth Proportional to 996.14, 1,374.69 and 548.00

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Solution

The fourth proportional to 996.14, 1,374.69 and 548.00 is: 756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.14 : 1,374.69 = 548.00 : x
  2. Step 2: Convert to fraction form
    996.14/1,374.69 = 548.00/x
  3. Step 3: Cross multiply
    996.14x = 1,374.69 × 548.00
  4. Step 4: Simplify right side
    996.14x = 753,323.25
  5. Step 5: Solve for x
    x = 753,323.25/996.14
  6. Step 6: Final answer
    x = 756.25

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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.