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Finding the Fourth Proportional to 1,996.52, 2,994.24 and 842

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Solution

The fourth proportional to 1,996.52, 2,994.24 and 842 is: 1,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.52 : 2,994.24 = 842 : x
  2. Step 2: Convert to fraction form
    1,996.52/2,994.24 = 842/x
  3. Step 3: Cross multiply
    1,996.52x = 2,994.24 × 842
  4. Step 4: Simplify right side
    1,996.52x = 2,521,150.08
  5. Step 5: Solve for x
    x = 2,521,150.08/1,996.52
  6. Step 6: Final answer
    x = 1,262.77

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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.