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Finding the Fourth Proportional to 4,793.80, 7,190.70 and 4,448.20

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Solution

The fourth proportional to 4,793.80, 7,190.70 and 4,448.20 is: 6,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,793.80 : 7,190.70 = 4,448.20 : x
  2. Step 2: Convert to fraction form
    4,793.80/7,190.70 = 4,448.20/x
  3. Step 3: Cross multiply
    4,793.80x = 7,190.70 × 4,448.20
  4. Step 4: Simplify right side
    4,793.80x = 31,985,671.74
  5. Step 5: Solve for x
    x = 31,985,671.74/4,793.80
  6. Step 6: Final answer
    x = 6,672.30

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Double scale
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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.