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Finding the Fourth Proportional to 192,172.72, 288,103.26 and 79,936.90

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Solution

The fourth proportional to 192,172.72, 288,103.26 and 79,936.90 is: 119,840.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,172.72 : 288,103.26 = 79,936.90 : x
  2. Step 2: Convert to fraction form
    192,172.72/288,103.26 = 79,936.90/x
  3. Step 3: Cross multiply
    192,172.72x = 288,103.26 × 79,936.90
  4. Step 4: Simplify right side
    192,172.72x = 23,030,081,484.29
  5. Step 5: Solve for x
    x = 23,030,081,484.29/192,172.72
  6. Step 6: Final answer
    x = 119,840.53

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1.5x scale

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.