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Finding the Fourth Proportional to 11,993.75, 17,986.30 and 5,068.79

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Solution

The fourth proportional to 11,993.75, 17,986.30 and 5,068.79 is: 7,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.75 : 17,986.30 = 5,068.79 : x
  2. Step 2: Convert to fraction form
    11,993.75/17,986.30 = 5,068.79/x
  3. Step 3: Cross multiply
    11,993.75x = 17,986.30 × 5,068.79
  4. Step 4: Simplify right side
    11,993.75x = 91,168,674.97
  5. Step 5: Solve for x
    x = 91,168,674.97/11,993.75
  6. Step 6: Final answer
    x = 7,601.35

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1.5x scale

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.