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Finding the Fourth Proportional to 161,786.40, 242,679.60 and 136,125.60

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Solution

The fourth proportional to 161,786.40, 242,679.60 and 136,125.60 is: 204,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,786.40 : 242,679.60 = 136,125.60 : x
  2. Step 2: Convert to fraction form
    161,786.40/242,679.60 = 136,125.60/x
  3. Step 3: Cross multiply
    161,786.40x = 242,679.60 × 136,125.60
  4. Step 4: Simplify right side
    161,786.40x = 33,034,906,157.76
  5. Step 5: Solve for x
    x = 33,034,906,157.76/161,786.40
  6. Step 6: Final answer
    x = 204,188.40

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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.