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Finding the Fourth Proportional to 18,861.54, 26,029.08 and 11,792.14

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Solution

The fourth proportional to 18,861.54, 26,029.08 and 11,792.14 is: 16,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.54 : 26,029.08 = 11,792.14 : x
  2. Step 2: Convert to fraction form
    18,861.54/26,029.08 = 11,792.14/x
  3. Step 3: Cross multiply
    18,861.54x = 26,029.08 × 11,792.14
  4. Step 4: Simplify right side
    18,861.54x = 306,938,555.43
  5. Step 5: Solve for x
    x = 306,938,555.43/18,861.54
  6. Step 6: Final answer
    x = 16,273.25

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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.