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Finding the Fourth Proportional to 18,615.03, 27,882.44 and 8,739.51

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Solution

The fourth proportional to 18,615.03, 27,882.44 and 8,739.51 is: 13,090.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.03 : 27,882.44 = 8,739.51 : x
  2. Step 2: Convert to fraction form
    18,615.03/27,882.44 = 8,739.51/x
  3. Step 3: Cross multiply
    18,615.03x = 27,882.44 × 8,739.51
  4. Step 4: Simplify right side
    18,615.03x = 243,678,723.79
  5. Step 5: Solve for x
    x = 243,678,723.79/18,615.03
  6. Step 6: Final answer
    x = 13,090.43

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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.