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Finding the Fourth Proportional to 12,563.74, 18,845.67 and 7,365.97

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Solution

The fourth proportional to 12,563.74, 18,845.67 and 7,365.97 is: 11,048.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.74 : 18,845.67 = 7,365.97 : x
  2. Step 2: Convert to fraction form
    12,563.74/18,845.67 = 7,365.97/x
  3. Step 3: Cross multiply
    12,563.74x = 18,845.67 × 7,365.97
  4. Step 4: Simplify right side
    12,563.74x = 138,816,527.21
  5. Step 5: Solve for x
    x = 138,816,527.21/12,563.74
  6. Step 6: Final answer
    x = 11,048.99

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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.