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Finding the Fourth Proportional to 18,532.67, 27,800.21 and 7,437.90

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Solution

The fourth proportional to 18,532.67, 27,800.21 and 7,437.90 is: 11,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,532.67 : 27,800.21 = 7,437.90 : x
  2. Step 2: Convert to fraction form
    18,532.67/27,800.21 = 7,437.90/x
  3. Step 3: Cross multiply
    18,532.67x = 27,800.21 × 7,437.90
  4. Step 4: Simplify right side
    18,532.67x = 206,775,304.80
  5. Step 5: Solve for x
    x = 206,775,304.80/18,532.67
  6. Step 6: Final answer
    x = 11,157.34

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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.