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Finding the Fourth Proportional to 7,879.12, 10,794.35 and 7,583.68

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Solution

The fourth proportional to 7,879.12, 10,794.35 and 7,583.68 is: 10,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.12 : 10,794.35 = 7,583.68 : x
  2. Step 2: Convert to fraction form
    7,879.12/10,794.35 = 7,583.68/x
  3. Step 3: Cross multiply
    7,879.12x = 10,794.35 × 7,583.68
  4. Step 4: Simplify right side
    7,879.12x = 81,860,896.21
  5. Step 5: Solve for x
    x = 81,860,896.21/7,879.12
  6. Step 6: Final answer
    x = 10,389.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.