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Finding the Fourth Proportional to 1,436.50, 1,983.99 and 969.94

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Solution

The fourth proportional to 1,436.50, 1,983.99 and 969.94 is: 1,339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.50 : 1,983.99 = 969.94 : x
  2. Step 2: Convert to fraction form
    1,436.50/1,983.99 = 969.94/x
  3. Step 3: Cross multiply
    1,436.50x = 1,983.99 × 969.94
  4. Step 4: Simplify right side
    1,436.50x = 1,924,351.26
  5. Step 5: Solve for x
    x = 1,924,351.26/1,436.50
  6. Step 6: Final answer
    x = 1,339.61

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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.