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Finding the Fourth Proportional to 13,993.44, 21,073.56 and 12,622.56

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Solution

The fourth proportional to 13,993.44, 21,073.56 and 12,622.56 is: 19,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.44 : 21,073.56 = 12,622.56 : x
  2. Step 2: Convert to fraction form
    13,993.44/21,073.56 = 12,622.56/x
  3. Step 3: Cross multiply
    13,993.44x = 21,073.56 × 12,622.56
  4. Step 4: Simplify right side
    13,993.44x = 266,002,275.51
  5. Step 5: Solve for x
    x = 266,002,275.51/13,993.44
  6. Step 6: Final answer
    x = 19,009.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.