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Finding the Fourth Proportional to 18,043.12, 27,065.22 and 4,895.44

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Solution

The fourth proportional to 18,043.12, 27,065.22 and 4,895.44 is: 7,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.12 : 27,065.22 = 4,895.44 : x
  2. Step 2: Convert to fraction form
    18,043.12/27,065.22 = 4,895.44/x
  3. Step 3: Cross multiply
    18,043.12x = 27,065.22 × 4,895.44
  4. Step 4: Simplify right side
    18,043.12x = 132,496,160.60
  5. Step 5: Solve for x
    x = 132,496,160.60/18,043.12
  6. Step 6: Final answer
    x = 7,343.31

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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.