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Finding the Fourth Proportional to 65,876.52, 98,817.51 and 19,129.39

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Solution

The fourth proportional to 65,876.52, 98,817.51 and 19,129.39 is: 28,694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,876.52 : 98,817.51 = 19,129.39 : x
  2. Step 2: Convert to fraction form
    65,876.52/98,817.51 = 19,129.39/x
  3. Step 3: Cross multiply
    65,876.52x = 98,817.51 × 19,129.39
  4. Step 4: Simplify right side
    65,876.52x = 1,890,318,687.62
  5. Step 5: Solve for x
    x = 1,890,318,687.62/65,876.52
  6. Step 6: Final answer
    x = 28,694.88

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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.