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Finding the Fourth Proportional to 11,751.99, 17,628.55 and 3,853.80

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Solution

The fourth proportional to 11,751.99, 17,628.55 and 3,853.80 is: 5,780.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,751.99 : 17,628.55 = 3,853.80 : x
  2. Step 2: Convert to fraction form
    11,751.99/17,628.55 = 3,853.80/x
  3. Step 3: Cross multiply
    11,751.99x = 17,628.55 × 3,853.80
  4. Step 4: Simplify right side
    11,751.99x = 67,936,951.36
  5. Step 5: Solve for x
    x = 67,936,951.36/11,751.99
  6. Step 6: Final answer
    x = 5,780.89

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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.