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Finding the Fourth Proportional to 7,010.75, 9,674.85 and 3,867.15

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Solution

The fourth proportional to 7,010.75, 9,674.85 and 3,867.15 is: 5,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,010.75 : 9,674.85 = 3,867.15 : x
  2. Step 2: Convert to fraction form
    7,010.75/9,674.85 = 3,867.15/x
  3. Step 3: Cross multiply
    7,010.75x = 9,674.85 × 3,867.15
  4. Step 4: Simplify right side
    7,010.75x = 37,414,076.84
  5. Step 5: Solve for x
    x = 37,414,076.84/7,010.75
  6. Step 6: Final answer
    x = 5,336.67

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1.5x scale

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.