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Finding the Fourth Proportional to 133,080.50, 183,640.06 and 75,704.56

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Solution

The fourth proportional to 133,080.50, 183,640.06 and 75,704.56 is: 104,466.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,080.50 : 183,640.06 = 75,704.56 : x
  2. Step 2: Convert to fraction form
    133,080.50/183,640.06 = 75,704.56/x
  3. Step 3: Cross multiply
    133,080.50x = 183,640.06 × 75,704.56
  4. Step 4: Simplify right side
    133,080.50x = 13,902,389,576.20
  5. Step 5: Solve for x
    x = 13,902,389,576.20/133,080.50
  6. Step 6: Final answer
    x = 104,466.01

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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.