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Finding the Fourth Proportional to 18,674.96, 28,012.44 and 10,789.48

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Solution

The fourth proportional to 18,674.96, 28,012.44 and 10,789.48 is: 16,184.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.96 : 28,012.44 = 10,789.48 : x
  2. Step 2: Convert to fraction form
    18,674.96/28,012.44 = 10,789.48/x
  3. Step 3: Cross multiply
    18,674.96x = 28,012.44 × 10,789.48
  4. Step 4: Simplify right side
    18,674.96x = 302,239,661.13
  5. Step 5: Solve for x
    x = 302,239,661.13/18,674.96
  6. Step 6: Final answer
    x = 16,184.22

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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.