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Finding the Fourth Proportional to 66,099.73, 91,217.34 and 35,884.81

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Solution

The fourth proportional to 66,099.73, 91,217.34 and 35,884.81 is: 49,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.73 : 91,217.34 = 35,884.81 : x
  2. Step 2: Convert to fraction form
    66,099.73/91,217.34 = 35,884.81/x
  3. Step 3: Cross multiply
    66,099.73x = 91,217.34 × 35,884.81
  4. Step 4: Simplify right side
    66,099.73x = 3,273,316,914.61
  5. Step 5: Solve for x
    x = 3,273,316,914.61/66,099.73
  6. Step 6: Final answer
    x = 49,520.88

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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.