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Finding the Fourth Proportional to 108,241.56, 162,099.90 and 74,867.94

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Solution

The fourth proportional to 108,241.56, 162,099.90 and 74,867.94 is: 112,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,241.56 : 162,099.90 = 74,867.94 : x
  2. Step 2: Convert to fraction form
    108,241.56/162,099.90 = 74,867.94/x
  3. Step 3: Cross multiply
    108,241.56x = 162,099.90 × 74,867.94
  4. Step 4: Simplify right side
    108,241.56x = 12,136,085,587.21
  5. Step 5: Solve for x
    x = 12,136,085,587.21/108,241.56
  6. Step 6: Final answer
    x = 112,120.39

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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.