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Finding the Fourth Proportional to 84,861.62, 127,243.64 and 34,976.15

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Solution

The fourth proportional to 84,861.62, 127,243.64 and 34,976.15 is: 52,444.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,861.62 : 127,243.64 = 34,976.15 : x
  2. Step 2: Convert to fraction form
    84,861.62/127,243.64 = 34,976.15/x
  3. Step 3: Cross multiply
    84,861.62x = 127,243.64 × 34,976.15
  4. Step 4: Simplify right side
    84,861.62x = 4,450,491,828.09
  5. Step 5: Solve for x
    x = 4,450,491,828.09/84,861.62
  6. Step 6: Final answer
    x = 52,444.11

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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.