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Finding the Fourth Proportional to 3,305.40, 4,956.66 and 996.36

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Solution

The fourth proportional to 3,305.40, 4,956.66 and 996.36 is: 1,494.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.40 : 4,956.66 = 996.36 : x
  2. Step 2: Convert to fraction form
    3,305.40/4,956.66 = 996.36/x
  3. Step 3: Cross multiply
    3,305.40x = 4,956.66 × 996.36
  4. Step 4: Simplify right side
    3,305.40x = 4,938,617.76
  5. Step 5: Solve for x
    x = 4,938,617.76/3,305.40
  6. Step 6: Final answer
    x = 1,494.11

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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.