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Finding the Fourth Proportional to 7,879.63, 10,873.92 and 4,342.83

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Solution

The fourth proportional to 7,879.63, 10,873.92 and 4,342.83 is: 5,993.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.63 : 10,873.92 = 4,342.83 : x
  2. Step 2: Convert to fraction form
    7,879.63/10,873.92 = 4,342.83/x
  3. Step 3: Cross multiply
    7,879.63x = 10,873.92 × 4,342.83
  4. Step 4: Simplify right side
    7,879.63x = 47,223,585.99
  5. Step 5: Solve for x
    x = 47,223,585.99/7,879.63
  6. Step 6: Final answer
    x = 5,993.12

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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.