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Finding the Fourth Proportional to 7,110.70, 10,674.15 and 4,190.65

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Solution

The fourth proportional to 7,110.70, 10,674.15 and 4,190.65 is: 6,290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.70 : 10,674.15 = 4,190.65 : x
  2. Step 2: Convert to fraction form
    7,110.70/10,674.15 = 4,190.65/x
  3. Step 3: Cross multiply
    7,110.70x = 10,674.15 × 4,190.65
  4. Step 4: Simplify right side
    7,110.70x = 44,731,626.70
  5. Step 5: Solve for x
    x = 44,731,626.70/7,110.70
  6. Step 6: Final answer
    x = 6,290.75

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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.