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Finding the Fourth Proportional to 66,194.97, 91,338.89 and 39,327.54

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Solution

The fourth proportional to 66,194.97, 91,338.89 and 39,327.54 is: 54,265.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,194.97 : 91,338.89 = 39,327.54 : x
  2. Step 2: Convert to fraction form
    66,194.97/91,338.89 = 39,327.54/x
  3. Step 3: Cross multiply
    66,194.97x = 91,338.89 × 39,327.54
  4. Step 4: Simplify right side
    66,194.97x = 3,592,133,653.39
  5. Step 5: Solve for x
    x = 3,592,133,653.39/66,194.97
  6. Step 6: Final answer
    x = 54,265.96

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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.