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Finding the Fourth Proportional to 9,076.74, 13,619.97 and 4,391.70

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Solution

The fourth proportional to 9,076.74, 13,619.97 and 4,391.70 is: 6,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,076.74 : 13,619.97 = 4,391.70 : x
  2. Step 2: Convert to fraction form
    9,076.74/13,619.97 = 4,391.70/x
  3. Step 3: Cross multiply
    9,076.74x = 13,619.97 × 4,391.70
  4. Step 4: Simplify right side
    9,076.74x = 59,814,822.25
  5. Step 5: Solve for x
    x = 59,814,822.25/9,076.74
  6. Step 6: Final answer
    x = 6,589.90

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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.