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Finding the Fourth Proportional to 104,414.70, 156,276.45 and 80,913.90

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Solution

The fourth proportional to 104,414.70, 156,276.45 and 80,913.90 is: 121,103.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,414.70 : 156,276.45 = 80,913.90 : x
  2. Step 2: Convert to fraction form
    104,414.70/156,276.45 = 80,913.90/x
  3. Step 3: Cross multiply
    104,414.70x = 156,276.45 × 80,913.90
  4. Step 4: Simplify right side
    104,414.70x = 12,644,937,047.66
  5. Step 5: Solve for x
    x = 12,644,937,047.66/104,414.70
  6. Step 6: Final answer
    x = 121,103.03

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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.