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Finding the Fourth Proportional to 18,623.67, 27,953.06 and 6,788.88

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Solution

The fourth proportional to 18,623.67, 27,953.06 and 6,788.88 is: 10,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,623.67 : 27,953.06 = 6,788.88 : x
  2. Step 2: Convert to fraction form
    18,623.67/27,953.06 = 6,788.88/x
  3. Step 3: Cross multiply
    18,623.67x = 27,953.06 × 6,788.88
  4. Step 4: Simplify right side
    18,623.67x = 189,770,071.93
  5. Step 5: Solve for x
    x = 189,770,071.93/18,623.67
  6. Step 6: Final answer
    x = 10,189.72

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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.