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Finding the Fourth Proportional to 108,736.40, 162,994.44 and 73,679.60

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Solution

The fourth proportional to 108,736.40, 162,994.44 and 73,679.60 is: 110,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,736.40 : 162,994.44 = 73,679.60 : x
  2. Step 2: Convert to fraction form
    108,736.40/162,994.44 = 73,679.60/x
  3. Step 3: Cross multiply
    108,736.40x = 162,994.44 × 73,679.60
  4. Step 4: Simplify right side
    108,736.40x = 12,009,365,141.42
  5. Step 5: Solve for x
    x = 12,009,365,141.42/108,736.40
  6. Step 6: Final answer
    x = 110,444.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.