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Finding the Fourth Proportional to 66,939.68, 92,376.72 and 36,725.20

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Solution

The fourth proportional to 66,939.68, 92,376.72 and 36,725.20 is: 50,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,939.68 : 92,376.72 = 36,725.20 : x
  2. Step 2: Convert to fraction form
    66,939.68/92,376.72 = 36,725.20/x
  3. Step 3: Cross multiply
    66,939.68x = 92,376.72 × 36,725.20
  4. Step 4: Simplify right side
    66,939.68x = 3,392,553,286.40
  5. Step 5: Solve for x
    x = 3,392,553,286.40/66,939.68
  6. Step 6: Final answer
    x = 50,680.75

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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.