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Finding the Fourth Proportional to 104,640.70, 156,961.05 and 34,516.30

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Solution

The fourth proportional to 104,640.70, 156,961.05 and 34,516.30 is: 51,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.70 : 156,961.05 = 34,516.30 : x
  2. Step 2: Convert to fraction form
    104,640.70/156,961.05 = 34,516.30/x
  3. Step 3: Cross multiply
    104,640.70x = 156,961.05 × 34,516.30
  4. Step 4: Simplify right side
    104,640.70x = 5,417,714,690.12
  5. Step 5: Solve for x
    x = 5,417,714,690.12/104,640.70
  6. Step 6: Final answer
    x = 51,774.45

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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.