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Finding the Fourth Proportional to 4,818.39, 7,229.06 and 4,321.66

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Solution

The fourth proportional to 4,818.39, 7,229.06 and 4,321.66 is: 6,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,818.39 : 7,229.06 = 4,321.66 : x
  2. Step 2: Convert to fraction form
    4,818.39/7,229.06 = 4,321.66/x
  3. Step 3: Cross multiply
    4,818.39x = 7,229.06 × 4,321.66
  4. Step 4: Simplify right side
    4,818.39x = 31,241,539.44
  5. Step 5: Solve for x
    x = 31,241,539.44/4,818.39
  6. Step 6: Final answer
    x = 6,483.81

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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.