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Finding the Fourth Proportional to 916.57, 1,375.26 and 833.14

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Solution

The fourth proportional to 916.57, 1,375.26 and 833.14 is: 1,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.57 : 1,375.26 = 833.14 : x
  2. Step 2: Convert to fraction form
    916.57/1,375.26 = 833.14/x
  3. Step 3: Cross multiply
    916.57x = 1,375.26 × 833.14
  4. Step 4: Simplify right side
    916.57x = 1,145,784.12
  5. Step 5: Solve for x
    x = 1,145,784.12/916.57
  6. Step 6: Final answer
    x = 1,250.08

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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.