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Finding the Fourth Proportional to 6,666.81, 9,200.07 and 3,682.62

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Solution

The fourth proportional to 6,666.81, 9,200.07 and 3,682.62 is: 5,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.81 : 9,200.07 = 3,682.62 : x
  2. Step 2: Convert to fraction form
    6,666.81/9,200.07 = 3,682.62/x
  3. Step 3: Cross multiply
    6,666.81x = 9,200.07 × 3,682.62
  4. Step 4: Simplify right side
    6,666.81x = 33,880,361.78
  5. Step 5: Solve for x
    x = 33,880,361.78/6,666.81
  6. Step 6: Final answer
    x = 5,081.95

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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.