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Finding the Fourth Proportional to 104,402.82, 156,553.20 and 72,828.02

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Solution

The fourth proportional to 104,402.82, 156,553.20 and 72,828.02 is: 109,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,402.82 : 156,553.20 = 72,828.02 : x
  2. Step 2: Convert to fraction form
    104,402.82/156,553.20 = 72,828.02/x
  3. Step 3: Cross multiply
    104,402.82x = 156,553.20 × 72,828.02
  4. Step 4: Simplify right side
    104,402.82x = 11,401,458,797.90
  5. Step 5: Solve for x
    x = 11,401,458,797.90/104,402.82
  6. Step 6: Final answer
    x = 109,206.43

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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.