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Finding the Fourth Proportional to 120,296.84, 166,007.62 and 66,580.71

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Solution

The fourth proportional to 120,296.84, 166,007.62 and 66,580.71 is: 91,880.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,296.84 : 166,007.62 = 66,580.71 : x
  2. Step 2: Convert to fraction form
    120,296.84/166,007.62 = 66,580.71/x
  3. Step 3: Cross multiply
    120,296.84x = 166,007.62 × 66,580.71
  4. Step 4: Simplify right side
    120,296.84x = 11,052,904,665.71
  5. Step 5: Solve for x
    x = 11,052,904,665.71/120,296.84
  6. Step 6: Final answer
    x = 91,880.26

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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.