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Finding the Fourth Proportional to 108,201.83, 162,311.96 and 28,250.40

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Solution

The fourth proportional to 108,201.83, 162,311.96 and 28,250.40 is: 42,378.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,201.83 : 162,311.96 = 28,250.40 : x
  2. Step 2: Convert to fraction form
    108,201.83/162,311.96 = 28,250.40/x
  3. Step 3: Cross multiply
    108,201.83x = 162,311.96 × 28,250.40
  4. Step 4: Simplify right side
    108,201.83x = 4,585,378,171.43
  5. Step 5: Solve for x
    x = 4,585,378,171.43/108,201.83
  6. Step 6: Final answer
    x = 42,378.01

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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.