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Finding the Fourth Proportional to 104,420.10, 156,520.80 and 41,215.80

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Solution

The fourth proportional to 104,420.10, 156,520.80 and 41,215.80 is: 61,780.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,420.10 : 156,520.80 = 41,215.80 : x
  2. Step 2: Convert to fraction form
    104,420.10/156,520.80 = 41,215.80/x
  3. Step 3: Cross multiply
    104,420.10x = 156,520.80 × 41,215.80
  4. Step 4: Simplify right side
    104,420.10x = 6,451,129,988.64
  5. Step 5: Solve for x
    x = 6,451,129,988.64/104,420.10
  6. Step 6: Final answer
    x = 61,780.54

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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.