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Finding the Fourth Proportional to 9,078.11, 13,619.79 and 3,235.17

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Solution

The fourth proportional to 9,078.11, 13,619.79 and 3,235.17 is: 4,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.11 : 13,619.79 = 3,235.17 : x
  2. Step 2: Convert to fraction form
    9,078.11/13,619.79 = 3,235.17/x
  3. Step 3: Cross multiply
    9,078.11x = 13,619.79 × 3,235.17
  4. Step 4: Simplify right side
    9,078.11x = 44,062,336.01
  5. Step 5: Solve for x
    x = 44,062,336.01/9,078.11
  6. Step 6: Final answer
    x = 4,853.69

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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.