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Finding the Fourth Proportional to 7,879.70, 10,873.49 and 4,342.94

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Solution

The fourth proportional to 7,879.70, 10,873.49 and 4,342.94 is: 5,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.70 : 10,873.49 = 4,342.94 : x
  2. Step 2: Convert to fraction form
    7,879.70/10,873.49 = 4,342.94/x
  3. Step 3: Cross multiply
    7,879.70x = 10,873.49 × 4,342.94
  4. Step 4: Simplify right side
    7,879.70x = 47,222,860.29
  5. Step 5: Solve for x
    x = 47,222,860.29/7,879.70
  6. Step 6: Final answer
    x = 5,992.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.