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Finding the Fourth Proportional to 18,914.33, 28,344.75 and 7,814.09

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Solution

The fourth proportional to 18,914.33, 28,344.75 and 7,814.09 is: 11,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.33 : 28,344.75 = 7,814.09 : x
  2. Step 2: Convert to fraction form
    18,914.33/28,344.75 = 7,814.09/x
  3. Step 3: Cross multiply
    18,914.33x = 28,344.75 × 7,814.09
  4. Step 4: Simplify right side
    18,914.33x = 221,488,285.80
  5. Step 5: Solve for x
    x = 221,488,285.80/18,914.33
  6. Step 6: Final answer
    x = 11,710.08

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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.