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Finding the Fourth Proportional to 66,787.36, 92,164.91 and 36,573.96

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Solution

The fourth proportional to 66,787.36, 92,164.91 and 36,573.96 is: 50,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,787.36 : 92,164.91 = 36,573.96 : x
  2. Step 2: Convert to fraction form
    66,787.36/92,164.91 = 36,573.96/x
  3. Step 3: Cross multiply
    66,787.36x = 92,164.91 × 36,573.96
  4. Step 4: Simplify right side
    66,787.36x = 3,370,835,731.74
  5. Step 5: Solve for x
    x = 3,370,835,731.74/66,787.36
  6. Step 6: Final answer
    x = 50,471.16

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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.