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Finding the Fourth Proportional to 108,380.40, 162,700.20 and 61,033.20

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Solution

The fourth proportional to 108,380.40, 162,700.20 and 61,033.20 is: 91,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,380.40 : 162,700.20 = 61,033.20 : x
  2. Step 2: Convert to fraction form
    108,380.40/162,700.20 = 61,033.20/x
  3. Step 3: Cross multiply
    108,380.40x = 162,700.20 × 61,033.20
  4. Step 4: Simplify right side
    108,380.40x = 9,930,113,846.64
  5. Step 5: Solve for x
    x = 9,930,113,846.64/108,380.40
  6. Step 6: Final answer
    x = 91,622.78

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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.