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Finding the Fourth Proportional to 121,883.82, 168,191.00 and 111,845.49

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Solution

The fourth proportional to 121,883.82, 168,191.00 and 111,845.49 is: 154,338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,883.82 : 168,191.00 = 111,845.49 : x
  2. Step 2: Convert to fraction form
    121,883.82/168,191.00 = 111,845.49/x
  3. Step 3: Cross multiply
    121,883.82x = 168,191.00 × 111,845.49
  4. Step 4: Simplify right side
    121,883.82x = 18,811,403,408.41
  5. Step 5: Solve for x
    x = 18,811,403,408.41/121,883.82
  6. Step 6: Final answer
    x = 154,338.81

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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.