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Finding the Fourth Proportional to 201,992.21, 278,736.73 and 111,343.49

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Solution

The fourth proportional to 201,992.21, 278,736.73 and 111,343.49 is: 153,647.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,992.21 : 278,736.73 = 111,343.49 : x
  2. Step 2: Convert to fraction form
    201,992.21/278,736.73 = 111,343.49/x
  3. Step 3: Cross multiply
    201,992.21x = 278,736.73 × 111,343.49
  4. Step 4: Simplify right side
    201,992.21x = 31,035,520,309.39
  5. Step 5: Solve for x
    x = 31,035,520,309.39/201,992.21
  6. Step 6: Final answer
    x = 153,647.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.