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Finding the Fourth Proportional to 1,474.30, 2,036.17 and 979.12

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Solution

The fourth proportional to 1,474.30, 2,036.17 and 979.12 is: 1,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.30 : 2,036.17 = 979.12 : x
  2. Step 2: Convert to fraction form
    1,474.30/2,036.17 = 979.12/x
  3. Step 3: Cross multiply
    1,474.30x = 2,036.17 × 979.12
  4. Step 4: Simplify right side
    1,474.30x = 1,993,658.54
  5. Step 5: Solve for x
    x = 1,993,658.54/1,474.30
  6. Step 6: Final answer
    x = 1,352.27

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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.