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Finding the Fourth Proportional to 81,468.70, 122,166.60 and 37,072.60

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Solution

The fourth proportional to 81,468.70, 122,166.60 and 37,072.60 is: 55,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468.70 : 122,166.60 = 37,072.60 : x
  2. Step 2: Convert to fraction form
    81,468.70/122,166.60 = 37,072.60/x
  3. Step 3: Cross multiply
    81,468.70x = 122,166.60 × 37,072.60
  4. Step 4: Simplify right side
    81,468.70x = 4,529,033,495.16
  5. Step 5: Solve for x
    x = 4,529,033,495.16/81,468.70
  6. Step 6: Final answer
    x = 55,592.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.