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Finding the Fourth Proportional to 18,752.81, 27,992.33 and 16,388.21

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Solution

The fourth proportional to 18,752.81, 27,992.33 and 16,388.21 is: 24,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.81 : 27,992.33 = 16,388.21 : x
  2. Step 2: Convert to fraction form
    18,752.81/27,992.33 = 16,388.21/x
  3. Step 3: Cross multiply
    18,752.81x = 27,992.33 × 16,388.21
  4. Step 4: Simplify right side
    18,752.81x = 458,743,960.53
  5. Step 5: Solve for x
    x = 458,743,960.53/18,752.81
  6. Step 6: Final answer
    x = 24,462.68

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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.