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Finding the Fourth Proportional to 66,474.20, 91,734.04 and 36,258.96

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Solution

The fourth proportional to 66,474.20, 91,734.04 and 36,258.96 is: 50,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.20 : 91,734.04 = 36,258.96 : x
  2. Step 2: Convert to fraction form
    66,474.20/91,734.04 = 36,258.96/x
  3. Step 3: Cross multiply
    66,474.20x = 91,734.04 × 36,258.96
  4. Step 4: Simplify right side
    66,474.20x = 3,326,180,887.00
  5. Step 5: Solve for x
    x = 3,326,180,887.00/66,474.20
  6. Step 6: Final answer
    x = 50,037.17

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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.