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Finding the Fourth Proportional to 104,676.62, 156,955.46 and 71,436.95

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Solution

The fourth proportional to 104,676.62, 156,955.46 and 71,436.95 is: 107,114.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,676.62 : 156,955.46 = 71,436.95 : x
  2. Step 2: Convert to fraction form
    104,676.62/156,955.46 = 71,436.95/x
  3. Step 3: Cross multiply
    104,676.62x = 156,955.46 × 71,436.95
  4. Step 4: Simplify right side
    104,676.62x = 11,212,418,206.29
  5. Step 5: Solve for x
    x = 11,212,418,206.29/104,676.62
  6. Step 6: Final answer
    x = 107,114.83

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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.