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Finding the Fourth Proportional to 106,568.92, 159,367.80 and 79,570.15

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Solution

The fourth proportional to 106,568.92, 159,367.80 and 79,570.15 is: 118,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,568.92 : 159,367.80 = 79,570.15 : x
  2. Step 2: Convert to fraction form
    106,568.92/159,367.80 = 79,570.15/x
  3. Step 3: Cross multiply
    106,568.92x = 159,367.80 × 79,570.15
  4. Step 4: Simplify right side
    106,568.92x = 12,680,919,903.62
  5. Step 5: Solve for x
    x = 12,680,919,903.62/106,568.92
  6. Step 6: Final answer
    x = 118,992.66

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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.