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Finding the Fourth Proportional to 234,558.64, 323,682.96 and 139,008.70

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Solution

The fourth proportional to 234,558.64, 323,682.96 and 139,008.70 is: 191,827.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,558.64 : 323,682.96 = 139,008.70 : x
  2. Step 2: Convert to fraction form
    234,558.64/323,682.96 = 139,008.70/x
  3. Step 3: Cross multiply
    234,558.64x = 323,682.96 × 139,008.70
  4. Step 4: Simplify right side
    234,558.64x = 44,994,747,481.75
  5. Step 5: Solve for x
    x = 44,994,747,481.75/234,558.64
  6. Step 6: Final answer
    x = 191,827.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.