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Finding the Fourth Proportional to 66,446.59, 91,704.07 and 37,770.56

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Solution

The fourth proportional to 66,446.59, 91,704.07 and 37,770.56 is: 52,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446.59 : 91,704.07 = 37,770.56 : x
  2. Step 2: Convert to fraction form
    66,446.59/91,704.07 = 37,770.56/x
  3. Step 3: Cross multiply
    66,446.59x = 91,704.07 × 37,770.56
  4. Step 4: Simplify right side
    66,446.59x = 3,463,714,078.18
  5. Step 5: Solve for x
    x = 3,463,714,078.18/66,446.59
  6. Step 6: Final answer
    x = 52,127.79

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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.