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Finding the Fourth Proportional to 18,698.49, 28,046.95 and 7,604.75

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Solution

The fourth proportional to 18,698.49, 28,046.95 and 7,604.75 is: 11,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.49 : 28,046.95 = 7,604.75 : x
  2. Step 2: Convert to fraction form
    18,698.49/28,046.95 = 7,604.75/x
  3. Step 3: Cross multiply
    18,698.49x = 28,046.95 × 7,604.75
  4. Step 4: Simplify right side
    18,698.49x = 213,290,043.01
  5. Step 5: Solve for x
    x = 213,290,043.01/18,698.49
  6. Step 6: Final answer
    x = 11,406.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.