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Finding the Fourth Proportional to 19,967.26, 27,554.94 and 11,015

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Solution

The fourth proportional to 19,967.26, 27,554.94 and 11,015 is: 15,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,967.26 : 27,554.94 = 11,015 : x
  2. Step 2: Convert to fraction form
    19,967.26/27,554.94 = 11,015/x
  3. Step 3: Cross multiply
    19,967.26x = 27,554.94 × 11,015
  4. Step 4: Simplify right side
    19,967.26x = 303,517,664.10
  5. Step 5: Solve for x
    x = 303,517,664.10/19,967.26
  6. Step 6: Final answer
    x = 15,200.77

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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.