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Finding the Fourth Proportional to 43,731.60, 65,613.60 and 14,150.40

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Solution

The fourth proportional to 43,731.60, 65,613.60 and 14,150.40 is: 21,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,731.60 : 65,613.60 = 14,150.40 : x
  2. Step 2: Convert to fraction form
    43,731.60/65,613.60 = 14,150.40/x
  3. Step 3: Cross multiply
    43,731.60x = 65,613.60 × 14,150.40
  4. Step 4: Simplify right side
    43,731.60x = 928,458,685.44
  5. Step 5: Solve for x
    x = 928,458,685.44/43,731.60
  6. Step 6: Final answer
    x = 21,230.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.