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Finding the Fourth Proportional to 1,369.56, 1,889.88 and 748.56

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Solution

The fourth proportional to 1,369.56, 1,889.88 and 748.56 is: 1,032.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.56 : 1,889.88 = 748.56 : x
  2. Step 2: Convert to fraction form
    1,369.56/1,889.88 = 748.56/x
  3. Step 3: Cross multiply
    1,369.56x = 1,889.88 × 748.56
  4. Step 4: Simplify right side
    1,369.56x = 1,414,688.57
  5. Step 5: Solve for x
    x = 1,414,688.57/1,369.56
  6. Step 6: Final answer
    x = 1,032.95

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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.