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Finding the Fourth Proportional to 66,825.16, 92,215 and 36,604.78

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Solution

The fourth proportional to 66,825.16, 92,215 and 36,604.78 is: 50,512.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,825.16 : 92,215 = 36,604.78 : x
  2. Step 2: Convert to fraction form
    66,825.16/92,215 = 36,604.78/x
  3. Step 3: Cross multiply
    66,825.16x = 92,215 × 36,604.78
  4. Step 4: Simplify right side
    66,825.16x = 3,375,509,787.70
  5. Step 5: Solve for x
    x = 3,375,509,787.70/66,825.16
  6. Step 6: Final answer
    x = 50,512.56

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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.