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Finding the Fourth Proportional to 72,178.44, 108,282.05 and 22,256.37

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Solution

The fourth proportional to 72,178.44, 108,282.05 and 22,256.37 is: 33,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,178.44 : 108,282.05 = 22,256.37 : x
  2. Step 2: Convert to fraction form
    72,178.44/108,282.05 = 22,256.37/x
  3. Step 3: Cross multiply
    72,178.44x = 108,282.05 × 22,256.37
  4. Step 4: Simplify right side
    72,178.44x = 2,409,965,261.63
  5. Step 5: Solve for x
    x = 2,409,965,261.63/72,178.44
  6. Step 6: Final answer
    x = 33,388.99

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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.