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Finding the Fourth Proportional to 185,408.05, 277,918.15 and 85,633.69

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Solution

The fourth proportional to 185,408.05, 277,918.15 and 85,633.69 is: 128,360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,408.05 : 277,918.15 = 85,633.69 : x
  2. Step 2: Convert to fraction form
    185,408.05/277,918.15 = 85,633.69/x
  3. Step 3: Cross multiply
    185,408.05x = 277,918.15 × 85,633.69
  4. Step 4: Simplify right side
    185,408.05x = 23,799,157,768.14
  5. Step 5: Solve for x
    x = 23,799,157,768.14/185,408.05
  6. Step 6: Final answer
    x = 128,360.97

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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.