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Finding the Fourth Proportional to 18,455.61, 27,684.63 and 6,777.03

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Solution

The fourth proportional to 18,455.61, 27,684.63 and 6,777.03 is: 10,165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.61 : 27,684.63 = 6,777.03 : x
  2. Step 2: Convert to fraction form
    18,455.61/27,684.63 = 6,777.03/x
  3. Step 3: Cross multiply
    18,455.61x = 27,684.63 × 6,777.03
  4. Step 4: Simplify right side
    18,455.61x = 187,619,568.05
  5. Step 5: Solve for x
    x = 187,619,568.05/18,455.61
  6. Step 6: Final answer
    x = 10,165.99

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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.