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Finding the Fourth Proportional to 80,980.21, 111,727.92 and 46,976.92

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Solution

The fourth proportional to 80,980.21, 111,727.92 and 46,976.92 is: 64,813.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,980.21 : 111,727.92 = 46,976.92 : x
  2. Step 2: Convert to fraction form
    80,980.21/111,727.92 = 46,976.92/x
  3. Step 3: Cross multiply
    80,980.21x = 111,727.92 × 46,976.92
  4. Step 4: Simplify right side
    80,980.21x = 5,248,633,456.45
  5. Step 5: Solve for x
    x = 5,248,633,456.45/80,980.21
  6. Step 6: Final answer
    x = 64,813.78

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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.