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Finding the Fourth Proportional to 66,470.94, 91,728.23 and 36,256.95

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Solution

The fourth proportional to 66,470.94, 91,728.23 and 36,256.95 is: 50,033.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,470.94 : 91,728.23 = 36,256.95 : x
  2. Step 2: Convert to fraction form
    66,470.94/91,728.23 = 36,256.95/x
  3. Step 3: Cross multiply
    66,470.94x = 91,728.23 × 36,256.95
  4. Step 4: Simplify right side
    66,470.94x = 3,325,785,667.41
  5. Step 5: Solve for x
    x = 3,325,785,667.41/66,470.94
  6. Step 6: Final answer
    x = 50,033.68

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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.