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Finding the Fourth Proportional to 18,605.81, 27,788.28 and 16,847.30

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Solution

The fourth proportional to 18,605.81, 27,788.28 and 16,847.30 is: 25,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.81 : 27,788.28 = 16,847.30 : x
  2. Step 2: Convert to fraction form
    18,605.81/27,788.28 = 16,847.30/x
  3. Step 3: Cross multiply
    18,605.81x = 27,788.28 × 16,847.30
  4. Step 4: Simplify right side
    18,605.81x = 468,157,489.64
  5. Step 5: Solve for x
    x = 468,157,489.64/18,605.81
  6. Step 6: Final answer
    x = 25,161.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.