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Finding the Fourth Proportional to 120,588.68, 166,411.56 and 66,873.74

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Solution

The fourth proportional to 120,588.68, 166,411.56 and 66,873.74 is: 92,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,588.68 : 166,411.56 = 66,873.74 : x
  2. Step 2: Convert to fraction form
    120,588.68/166,411.56 = 66,873.74/x
  3. Step 3: Cross multiply
    120,588.68x = 166,411.56 × 66,873.74
  4. Step 4: Simplify right side
    120,588.68x = 11,128,563,396.43
  5. Step 5: Solve for x
    x = 11,128,563,396.43/120,588.68
  6. Step 6: Final answer
    x = 92,285.31

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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.