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Finding the Fourth Proportional to 66,191.17, 91,344.42 and 35,976.56

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Solution

The fourth proportional to 66,191.17, 91,344.42 and 35,976.56 is: 49,647.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,191.17 : 91,344.42 = 35,976.56 : x
  2. Step 2: Convert to fraction form
    66,191.17/91,344.42 = 35,976.56/x
  3. Step 3: Cross multiply
    66,191.17x = 91,344.42 × 35,976.56
  4. Step 4: Simplify right side
    66,191.17x = 3,286,258,063.89
  5. Step 5: Solve for x
    x = 3,286,258,063.89/66,191.17
  6. Step 6: Final answer
    x = 49,647.98

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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.