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Finding the Fourth Proportional to 11,793.90, 17,692.80 and 3,894.18

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Solution

The fourth proportional to 11,793.90, 17,692.80 and 3,894.18 is: 5,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,793.90 : 17,692.80 = 3,894.18 : x
  2. Step 2: Convert to fraction form
    11,793.90/17,692.80 = 3,894.18/x
  3. Step 3: Cross multiply
    11,793.90x = 17,692.80 × 3,894.18
  4. Step 4: Simplify right side
    11,793.90x = 68,898,947.90
  5. Step 5: Solve for x
    x = 68,898,947.90/11,793.90
  6. Step 6: Final answer
    x = 5,841.91

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1.5x scale

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.