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Finding the Fourth Proportional to 1,396.82, 1,926.54 and 949.04

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Solution

The fourth proportional to 1,396.82, 1,926.54 and 949.04 is: 1,308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.82 : 1,926.54 = 949.04 : x
  2. Step 2: Convert to fraction form
    1,396.82/1,926.54 = 949.04/x
  3. Step 3: Cross multiply
    1,396.82x = 1,926.54 × 949.04
  4. Step 4: Simplify right side
    1,396.82x = 1,828,357.45
  5. Step 5: Solve for x
    x = 1,828,357.45/1,396.82
  6. Step 6: Final answer
    x = 1,308.94

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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.