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Finding the Fourth Proportional to 7,867.55, 11,804.06 and 5,245.58

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Solution

The fourth proportional to 7,867.55, 11,804.06 and 5,245.58 is: 7,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.55 : 11,804.06 = 5,245.58 : x
  2. Step 2: Convert to fraction form
    7,867.55/11,804.06 = 5,245.58/x
  3. Step 3: Cross multiply
    7,867.55x = 11,804.06 × 5,245.58
  4. Step 4: Simplify right side
    7,867.55x = 61,919,183.68
  5. Step 5: Solve for x
    x = 61,919,183.68/7,867.55
  6. Step 6: Final answer
    x = 7,870.20

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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.