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Finding the Fourth Proportional to 7,078.44, 9,766.66 and 4,283.88

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Solution

The fourth proportional to 7,078.44, 9,766.66 and 4,283.88 is: 5,910.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.44 : 9,766.66 = 4,283.88 : x
  2. Step 2: Convert to fraction form
    7,078.44/9,766.66 = 4,283.88/x
  3. Step 3: Cross multiply
    7,078.44x = 9,766.66 × 4,283.88
  4. Step 4: Simplify right side
    7,078.44x = 41,839,199.44
  5. Step 5: Solve for x
    x = 41,839,199.44/7,078.44
  6. Step 6: Final answer
    x = 5,910.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.