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Finding the Fourth Proportional to 70,233.94, 105,349.83 and 17,643.43

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Solution

The fourth proportional to 70,233.94, 105,349.83 and 17,643.43 is: 26,464.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,233.94 : 105,349.83 = 17,643.43 : x
  2. Step 2: Convert to fraction form
    70,233.94/105,349.83 = 17,643.43/x
  3. Step 3: Cross multiply
    70,233.94x = 105,349.83 × 17,643.43
  4. Step 4: Simplify right side
    70,233.94x = 1,858,732,351.12
  5. Step 5: Solve for x
    x = 1,858,732,351.12/70,233.94
  6. Step 6: Final answer
    x = 26,464.87

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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.