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Finding the Fourth Proportional to 108,736.80, 162,910.80 and 92,018.40

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Solution

The fourth proportional to 108,736.80, 162,910.80 and 92,018.40 is: 137,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,736.80 : 162,910.80 = 92,018.40 : x
  2. Step 2: Convert to fraction form
    108,736.80/162,910.80 = 92,018.40/x
  3. Step 3: Cross multiply
    108,736.80x = 162,910.80 × 92,018.40
  4. Step 4: Simplify right side
    108,736.80x = 14,990,791,158.72
  5. Step 5: Solve for x
    x = 14,990,791,158.72/108,736.80
  6. Step 6: Final answer
    x = 137,863.09

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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.