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Finding the Fourth Proportional to 66,076.70, 91,261.52 and 43,516.53

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Solution

The fourth proportional to 66,076.70, 91,261.52 and 43,516.53 is: 60,102.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,076.70 : 91,261.52 = 43,516.53 : x
  2. Step 2: Convert to fraction form
    66,076.70/91,261.52 = 43,516.53/x
  3. Step 3: Cross multiply
    66,076.70x = 91,261.52 × 43,516.53
  4. Step 4: Simplify right side
    66,076.70x = 3,971,384,455.34
  5. Step 5: Solve for x
    x = 3,971,384,455.34/66,076.70
  6. Step 6: Final answer
    x = 60,102.65

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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.