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Finding the Fourth Proportional to 18,852.84, 25,992.90 and 11,776.68

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Solution

The fourth proportional to 18,852.84, 25,992.90 and 11,776.68 is: 16,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.84 : 25,992.90 = 11,776.68 : x
  2. Step 2: Convert to fraction form
    18,852.84/25,992.90 = 11,776.68/x
  3. Step 3: Cross multiply
    18,852.84x = 25,992.90 × 11,776.68
  4. Step 4: Simplify right side
    18,852.84x = 306,110,065.57
  5. Step 5: Solve for x
    x = 306,110,065.57/18,852.84
  6. Step 6: Final answer
    x = 16,236.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.