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Finding the Fourth Proportional to 109,912.70, 164,869.05 and 26,806.70

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Solution

The fourth proportional to 109,912.70, 164,869.05 and 26,806.70 is: 40,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,912.70 : 164,869.05 = 26,806.70 : x
  2. Step 2: Convert to fraction form
    109,912.70/164,869.05 = 26,806.70/x
  3. Step 3: Cross multiply
    109,912.70x = 164,869.05 × 26,806.70
  4. Step 4: Simplify right side
    109,912.70x = 4,419,595,162.64
  5. Step 5: Solve for x
    x = 4,419,595,162.64/109,912.70
  6. Step 6: Final answer
    x = 40,210.05

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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.