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Finding the Fourth Proportional to 1,993.44, 2,990.16 and 694

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Solution

The fourth proportional to 1,993.44, 2,990.16 and 694 is: 1,041.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.44 : 2,990.16 = 694 : x
  2. Step 2: Convert to fraction form
    1,993.44/2,990.16 = 694/x
  3. Step 3: Cross multiply
    1,993.44x = 2,990.16 × 694
  4. Step 4: Simplify right side
    1,993.44x = 2,075,171.04
  5. Step 5: Solve for x
    x = 2,075,171.04/1,993.44
  6. Step 6: Final answer
    x = 1,041.00

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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.