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Finding the Fourth Proportional to 18,622.80, 25,696.62 and 11,068.97

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Solution

The fourth proportional to 18,622.80, 25,696.62 and 11,068.97 is: 15,273.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.80 : 25,696.62 = 11,068.97 : x
  2. Step 2: Convert to fraction form
    18,622.80/25,696.62 = 11,068.97/x
  3. Step 3: Cross multiply
    18,622.80x = 25,696.62 × 11,068.97
  4. Step 4: Simplify right side
    18,622.80x = 284,434,987.40
  5. Step 5: Solve for x
    x = 284,434,987.40/18,622.80
  6. Step 6: Final answer
    x = 15,273.48

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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.