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Finding the Fourth Proportional to 43,144.40, 64,724.20 and 17,843.84

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Solution

The fourth proportional to 43,144.40, 64,724.20 and 17,843.84 is: 26,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,144.40 : 64,724.20 = 17,843.84 : x
  2. Step 2: Convert to fraction form
    43,144.40/64,724.20 = 17,843.84/x
  3. Step 3: Cross multiply
    43,144.40x = 64,724.20 × 17,843.84
  4. Step 4: Simplify right side
    43,144.40x = 1,154,928,268.93
  5. Step 5: Solve for x
    x = 1,154,928,268.93/43,144.40
  6. Step 6: Final answer
    x = 26,768.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.