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Finding the Fourth Proportional to 66,628.50, 91,947.69 and 36,414.12

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Solution

The fourth proportional to 66,628.50, 91,947.69 and 36,414.12 is: 50,251.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,628.50 : 91,947.69 = 36,414.12 : x
  2. Step 2: Convert to fraction form
    66,628.50/91,947.69 = 36,414.12/x
  3. Step 3: Cross multiply
    66,628.50x = 91,947.69 × 36,414.12
  4. Step 4: Simplify right side
    66,628.50x = 3,348,194,217.38
  5. Step 5: Solve for x
    x = 3,348,194,217.38/66,628.50
  6. Step 6: Final answer
    x = 50,251.68

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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.