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Finding the Fourth Proportional to 104,655.90, 156,961.89 and 34,518.78

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Solution

The fourth proportional to 104,655.90, 156,961.89 and 34,518.78 is: 51,770.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,655.90 : 156,961.89 = 34,518.78 : x
  2. Step 2: Convert to fraction form
    104,655.90/156,961.89 = 34,518.78/x
  3. Step 3: Cross multiply
    104,655.90x = 156,961.89 × 34,518.78
  4. Step 4: Simplify right side
    104,655.90x = 5,418,132,949.29
  5. Step 5: Solve for x
    x = 5,418,132,949.29/104,655.90
  6. Step 6: Final answer
    x = 51,770.93

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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.