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Finding the Fourth Proportional to 65,217.68, 89,991.72 and 36,922.64

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Solution

The fourth proportional to 65,217.68, 89,991.72 and 36,922.64 is: 50,948.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,217.68 : 89,991.72 = 36,922.64 : x
  2. Step 2: Convert to fraction form
    65,217.68/89,991.72 = 36,922.64/x
  3. Step 3: Cross multiply
    65,217.68x = 89,991.72 × 36,922.64
  4. Step 4: Simplify right side
    65,217.68x = 3,322,731,880.54
  5. Step 5: Solve for x
    x = 3,322,731,880.54/65,217.68
  6. Step 6: Final answer
    x = 50,948.33

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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.