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Finding the Fourth Proportional to 18,415.80, 27,623.67 and 4,564.80

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Solution

The fourth proportional to 18,415.80, 27,623.67 and 4,564.80 is: 6,847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.80 : 27,623.67 = 4,564.80 : x
  2. Step 2: Convert to fraction form
    18,415.80/27,623.67 = 4,564.80/x
  3. Step 3: Cross multiply
    18,415.80x = 27,623.67 × 4,564.80
  4. Step 4: Simplify right side
    18,415.80x = 126,096,528.82
  5. Step 5: Solve for x
    x = 126,096,528.82/18,415.80
  6. Step 6: Final answer
    x = 6,847.19

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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.