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Finding the Fourth Proportional to 67,138.94, 92,651.84 and 38,846.45

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Solution

The fourth proportional to 67,138.94, 92,651.84 and 38,846.45 is: 53,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,138.94 : 92,651.84 = 38,846.45 : x
  2. Step 2: Convert to fraction form
    67,138.94/92,651.84 = 38,846.45/x
  3. Step 3: Cross multiply
    67,138.94x = 92,651.84 × 38,846.45
  4. Step 4: Simplify right side
    67,138.94x = 3,599,195,069.97
  5. Step 5: Solve for x
    x = 3,599,195,069.97/67,138.94
  6. Step 6: Final answer
    x = 53,608.16

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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.