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Finding the Fourth Proportional to 106,374.88, 159,589.66 and 39,815.96

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Solution

The fourth proportional to 106,374.88, 159,589.66 and 39,815.96 is: 59,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,374.88 : 159,589.66 = 39,815.96 : x
  2. Step 2: Convert to fraction form
    106,374.88/159,589.66 = 39,815.96/x
  3. Step 3: Cross multiply
    106,374.88x = 159,589.66 × 39,815.96
  4. Step 4: Simplify right side
    106,374.88x = 6,354,215,419.43
  5. Step 5: Solve for x
    x = 6,354,215,419.43/106,374.88
  6. Step 6: Final answer
    x = 59,734.18

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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.