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Finding the Fourth Proportional to 120,670.37, 166,555.73 and 82,445.37

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Solution

The fourth proportional to 120,670.37, 166,555.73 and 82,445.37 is: 113,795.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,670.37 : 166,555.73 = 82,445.37 : x
  2. Step 2: Convert to fraction form
    120,670.37/166,555.73 = 82,445.37/x
  3. Step 3: Cross multiply
    120,670.37x = 166,555.73 × 82,445.37
  4. Step 4: Simplify right side
    120,670.37x = 13,731,748,855.20
  5. Step 5: Solve for x
    x = 13,731,748,855.20/120,670.37
  6. Step 6: Final answer
    x = 113,795.53

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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.