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Finding the Fourth Proportional to 6,920.75, 9,550.78 and 3,776.94

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Solution

The fourth proportional to 6,920.75, 9,550.78 and 3,776.94 is: 5,212.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.75 : 9,550.78 = 3,776.94 : x
  2. Step 2: Convert to fraction form
    6,920.75/9,550.78 = 3,776.94/x
  3. Step 3: Cross multiply
    6,920.75x = 9,550.78 × 3,776.94
  4. Step 4: Simplify right side
    6,920.75x = 36,072,713.57
  5. Step 5: Solve for x
    x = 36,072,713.57/6,920.75
  6. Step 6: Final answer
    x = 5,212.25

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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.