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Finding the Fourth Proportional to 102,755, 154,132.50 and 28,883

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Solution

The fourth proportional to 102,755, 154,132.50 and 28,883 is: 43,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,755 : 154,132.50 = 28,883 : x
  2. Step 2: Convert to fraction form
    102,755/154,132.50 = 28,883/x
  3. Step 3: Cross multiply
    102,755x = 154,132.50 × 28,883
  4. Step 4: Simplify right side
    102,755x = 4,451,808,997.50
  5. Step 5: Solve for x
    x = 4,451,808,997.50/102,755
  6. Step 6: Final answer
    x = 43,324.50

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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.