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Finding the Fourth Proportional to 316,887.36, 475,408.86 and 92,249.76

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Solution

The fourth proportional to 316,887.36, 475,408.86 and 92,249.76 is: 138,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,887.36 : 475,408.86 = 92,249.76 : x
  2. Step 2: Convert to fraction form
    316,887.36/475,408.86 = 92,249.76/x
  3. Step 3: Cross multiply
    316,887.36x = 475,408.86 × 92,249.76
  4. Step 4: Simplify right side
    316,887.36x = 43,856,353,236.87
  5. Step 5: Solve for x
    x = 43,856,353,236.87/316,887.36
  6. Step 6: Final answer
    x = 138,397.29

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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.