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Finding the Fourth Proportional to 66,783.91, 92,163.88 and 36,572.10

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Solution

The fourth proportional to 66,783.91, 92,163.88 and 36,572.10 is: 50,470.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.91 : 92,163.88 = 36,572.10 : x
  2. Step 2: Convert to fraction form
    66,783.91/92,163.88 = 36,572.10/x
  3. Step 3: Cross multiply
    66,783.91x = 92,163.88 × 36,572.10
  4. Step 4: Simplify right side
    66,783.91x = 3,370,625,992.07
  5. Step 5: Solve for x
    x = 3,370,625,992.07/66,783.91
  6. Step 6: Final answer
    x = 50,470.63

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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.