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Finding the Fourth Proportional to 120,463.96, 166,240.46 and 66,007.47

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Solution

The fourth proportional to 120,463.96, 166,240.46 and 66,007.47 is: 91,090.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,463.96 : 166,240.46 = 66,007.47 : x
  2. Step 2: Convert to fraction form
    120,463.96/166,240.46 = 66,007.47/x
  3. Step 3: Cross multiply
    120,463.96x = 166,240.46 × 66,007.47
  4. Step 4: Simplify right side
    120,463.96x = 10,973,111,846.20
  5. Step 5: Solve for x
    x = 10,973,111,846.20/120,463.96
  6. Step 6: Final answer
    x = 91,090.41

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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.