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Finding the Fourth Proportional to 43,667.60, 65,530.20 and 15,965.60

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Solution

The fourth proportional to 43,667.60, 65,530.20 and 15,965.60 is: 23,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,667.60 : 65,530.20 = 15,965.60 : x
  2. Step 2: Convert to fraction form
    43,667.60/65,530.20 = 15,965.60/x
  3. Step 3: Cross multiply
    43,667.60x = 65,530.20 × 15,965.60
  4. Step 4: Simplify right side
    43,667.60x = 1,046,228,961.12
  5. Step 5: Solve for x
    x = 1,046,228,961.12/43,667.60
  6. Step 6: Final answer
    x = 23,958.93

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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.