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Finding the Fourth Proportional to 43,167, 64,728.81 and 25,161.03

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Solution

The fourth proportional to 43,167, 64,728.81 and 25,161.03 is: 37,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,167 : 64,728.81 = 25,161.03 : x
  2. Step 2: Convert to fraction form
    43,167/64,728.81 = 25,161.03/x
  3. Step 3: Cross multiply
    43,167x = 64,728.81 × 25,161.03
  4. Step 4: Simplify right side
    43,167x = 1,628,643,530.27
  5. Step 5: Solve for x
    x = 1,628,643,530.27/43,167
  6. Step 6: Final answer
    x = 37,728.90

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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.