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Finding the Fourth Proportional to 1,165.62, 1,747.17 and 548.94

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Solution

The fourth proportional to 1,165.62, 1,747.17 and 548.94 is: 822.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.62 : 1,747.17 = 548.94 : x
  2. Step 2: Convert to fraction form
    1,165.62/1,747.17 = 548.94/x
  3. Step 3: Cross multiply
    1,165.62x = 1,747.17 × 548.94
  4. Step 4: Simplify right side
    1,165.62x = 959,091.50
  5. Step 5: Solve for x
    x = 959,091.50/1,165.62
  6. Step 6: Final answer
    x = 822.82

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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.