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Finding the Fourth Proportional to 1,436.70, 1,982.62 and 940.17

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Solution

The fourth proportional to 1,436.70, 1,982.62 and 940.17 is: 1,297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.70 : 1,982.62 = 940.17 : x
  2. Step 2: Convert to fraction form
    1,436.70/1,982.62 = 940.17/x
  3. Step 3: Cross multiply
    1,436.70x = 1,982.62 × 940.17
  4. Step 4: Simplify right side
    1,436.70x = 1,863,999.85
  5. Step 5: Solve for x
    x = 1,863,999.85/1,436.70
  6. Step 6: Final answer
    x = 1,297.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.