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Finding the Fourth Proportional to 171,667.70, 257,712.15 and 108,487.70

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Solution

The fourth proportional to 171,667.70, 257,712.15 and 108,487.70 is: 162,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,667.70 : 257,712.15 = 108,487.70 : x
  2. Step 2: Convert to fraction form
    171,667.70/257,712.15 = 108,487.70/x
  3. Step 3: Cross multiply
    171,667.70x = 257,712.15 × 108,487.70
  4. Step 4: Simplify right side
    171,667.70x = 27,958,598,415.56
  5. Step 5: Solve for x
    x = 27,958,598,415.56/171,667.70
  6. Step 6: Final answer
    x = 162,864.64

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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.