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Finding the Fourth Proportional to 1,934.28, 2,902.50 and 961.32

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Solution

The fourth proportional to 1,934.28, 2,902.50 and 961.32 is: 1,442.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.28 : 2,902.50 = 961.32 : x
  2. Step 2: Convert to fraction form
    1,934.28/2,902.50 = 961.32/x
  3. Step 3: Cross multiply
    1,934.28x = 2,902.50 × 961.32
  4. Step 4: Simplify right side
    1,934.28x = 2,790,231.30
  5. Step 5: Solve for x
    x = 2,790,231.30/1,934.28
  6. Step 6: Final answer
    x = 1,442.52

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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.