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Finding the Fourth Proportional to 43,679.80, 65,519.70 and 14,098.60

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Solution

The fourth proportional to 43,679.80, 65,519.70 and 14,098.60 is: 21,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,679.80 : 65,519.70 = 14,098.60 : x
  2. Step 2: Convert to fraction form
    43,679.80/65,519.70 = 14,098.60/x
  3. Step 3: Cross multiply
    43,679.80x = 65,519.70 × 14,098.60
  4. Step 4: Simplify right side
    43,679.80x = 923,736,042.42
  5. Step 5: Solve for x
    x = 923,736,042.42/43,679.80
  6. Step 6: Final answer
    x = 21,147.90

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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.