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Finding the Fourth Proportional to 108,956.44, 150,376.14 and 66,539.56

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Solution

The fourth proportional to 108,956.44, 150,376.14 and 66,539.56 is: 91,834.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,956.44 : 150,376.14 = 66,539.56 : x
  2. Step 2: Convert to fraction form
    108,956.44/150,376.14 = 66,539.56/x
  3. Step 3: Cross multiply
    108,956.44x = 150,376.14 × 66,539.56
  4. Step 4: Simplify right side
    108,956.44x = 10,005,962,190.10
  5. Step 5: Solve for x
    x = 10,005,962,190.10/108,956.44
  6. Step 6: Final answer
    x = 91,834.52

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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.