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Finding the Fourth Proportional to 66,551.73, 91,837.80 and 36,336.60

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Solution

The fourth proportional to 66,551.73, 91,837.80 and 36,336.60 is: 50,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.73 : 91,837.80 = 36,336.60 : x
  2. Step 2: Convert to fraction form
    66,551.73/91,837.80 = 36,336.60/x
  3. Step 3: Cross multiply
    66,551.73x = 91,837.80 × 36,336.60
  4. Step 4: Simplify right side
    66,551.73x = 3,337,073,403.48
  5. Step 5: Solve for x
    x = 3,337,073,403.48/66,551.73
  6. Step 6: Final answer
    x = 50,142.55

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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.