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Finding the Fourth Proportional to 67,576.80, 93,268.64 and 39,286.56

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Solution

The fourth proportional to 67,576.80, 93,268.64 and 39,286.56 is: 54,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,576.80 : 93,268.64 = 39,286.56 : x
  2. Step 2: Convert to fraction form
    67,576.80/93,268.64 = 39,286.56/x
  3. Step 3: Cross multiply
    67,576.80x = 93,268.64 × 39,286.56
  4. Step 4: Simplify right side
    67,576.80x = 3,664,204,021.48
  5. Step 5: Solve for x
    x = 3,664,204,021.48/67,576.80
  6. Step 6: Final answer
    x = 54,222.81

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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.