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Finding the Fourth Proportional to 111,973, 167,969.22 and 28,867

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Solution

The fourth proportional to 111,973, 167,969.22 and 28,867 is: 43,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,973 : 167,969.22 = 28,867 : x
  2. Step 2: Convert to fraction form
    111,973/167,969.22 = 28,867/x
  3. Step 3: Cross multiply
    111,973x = 167,969.22 × 28,867
  4. Step 4: Simplify right side
    111,973x = 4,848,767,473.74
  5. Step 5: Solve for x
    x = 4,848,767,473.74/111,973
  6. Step 6: Final answer
    x = 43,303.01

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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.