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Finding the Fourth Proportional to 916.62, 1,375.03 and 267.35

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Solution

The fourth proportional to 916.62, 1,375.03 and 267.35 is: 401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.62 : 1,375.03 = 267.35 : x
  2. Step 2: Convert to fraction form
    916.62/1,375.03 = 267.35/x
  3. Step 3: Cross multiply
    916.62x = 1,375.03 × 267.35
  4. Step 4: Simplify right side
    916.62x = 367,620.08
  5. Step 5: Solve for x
    x = 367,620.08/916.62
  6. Step 6: Final answer
    x = 401.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.