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Finding the Fourth Proportional to 19,965.71, 27,554.22 and 11,013.99

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Solution

The fourth proportional to 19,965.71, 27,554.22 and 11,013.99 is: 15,200.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.71 : 27,554.22 = 11,013.99 : x
  2. Step 2: Convert to fraction form
    19,965.71/27,554.22 = 11,013.99/x
  3. Step 3: Cross multiply
    19,965.71x = 27,554.22 × 11,013.99
  4. Step 4: Simplify right side
    19,965.71x = 303,481,903.54
  5. Step 5: Solve for x
    x = 303,481,903.54/19,965.71
  6. Step 6: Final answer
    x = 15,200.16

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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.