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Finding the Fourth Proportional to 7,198.76, 9,934.31 and 4,055.15

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Solution

The fourth proportional to 7,198.76, 9,934.31 and 4,055.15 is: 5,596.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,198.76 : 9,934.31 = 4,055.15 : x
  2. Step 2: Convert to fraction form
    7,198.76/9,934.31 = 4,055.15/x
  3. Step 3: Cross multiply
    7,198.76x = 9,934.31 × 4,055.15
  4. Step 4: Simplify right side
    7,198.76x = 40,285,096.92
  5. Step 5: Solve for x
    x = 40,285,096.92/7,198.76
  6. Step 6: Final answer
    x = 5,596.12

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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.