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Finding the Fourth Proportional to 67,282.88, 92,836.32 and 38,986.88

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Solution

The fourth proportional to 67,282.88, 92,836.32 and 38,986.88 is: 53,793.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,282.88 : 92,836.32 = 38,986.88 : x
  2. Step 2: Convert to fraction form
    67,282.88/92,836.32 = 38,986.88/x
  3. Step 3: Cross multiply
    67,282.88x = 92,836.32 × 38,986.88
  4. Step 4: Simplify right side
    67,282.88x = 3,619,398,467.48
  5. Step 5: Solve for x
    x = 3,619,398,467.48/67,282.88
  6. Step 6: Final answer
    x = 53,793.75

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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.