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Finding the Fourth Proportional to 22,843.80, 31,507.05 and 19,662.51

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Solution

The fourth proportional to 22,843.80, 31,507.05 and 19,662.51 is: 27,119.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,843.80 : 31,507.05 = 19,662.51 : x
  2. Step 2: Convert to fraction form
    22,843.80/31,507.05 = 19,662.51/x
  3. Step 3: Cross multiply
    22,843.80x = 31,507.05 × 19,662.51
  4. Step 4: Simplify right side
    22,843.80x = 619,507,685.70
  5. Step 5: Solve for x
    x = 619,507,685.70/22,843.80
  6. Step 6: Final answer
    x = 27,119.29

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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.