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Finding the Fourth Proportional to 104,063.29, 156,094.73 and 80,405.21

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Solution

The fourth proportional to 104,063.29, 156,094.73 and 80,405.21 is: 120,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,063.29 : 156,094.73 = 80,405.21 : x
  2. Step 2: Convert to fraction form
    104,063.29/156,094.73 = 80,405.21/x
  3. Step 3: Cross multiply
    104,063.29x = 156,094.73 × 80,405.21
  4. Step 4: Simplify right side
    104,063.29x = 12,550,829,835.27
  5. Step 5: Solve for x
    x = 12,550,829,835.27/104,063.29
  6. Step 6: Final answer
    x = 120,607.66

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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.