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Finding the Fourth Proportional to 17,957.85, 26,938.34 and 5,480.69

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Solution

The fourth proportional to 17,957.85, 26,938.34 and 5,480.69 is: 8,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.85 : 26,938.34 = 5,480.69 : x
  2. Step 2: Convert to fraction form
    17,957.85/26,938.34 = 5,480.69/x
  3. Step 3: Cross multiply
    17,957.85x = 26,938.34 × 5,480.69
  4. Step 4: Simplify right side
    17,957.85x = 147,640,528.56
  5. Step 5: Solve for x
    x = 147,640,528.56/17,957.85
  6. Step 6: Final answer
    x = 8,221.50

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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.