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Finding the Fourth Proportional to 86,469.53, 129,694.57 and 23,294.32

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Solution

The fourth proportional to 86,469.53, 129,694.57 and 23,294.32 is: 34,938.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,469.53 : 129,694.57 = 23,294.32 : x
  2. Step 2: Convert to fraction form
    86,469.53/129,694.57 = 23,294.32/x
  3. Step 3: Cross multiply
    86,469.53x = 129,694.57 × 23,294.32
  4. Step 4: Simplify right side
    86,469.53x = 3,021,146,433.37
  5. Step 5: Solve for x
    x = 3,021,146,433.37/86,469.53
  6. Step 6: Final answer
    x = 34,938.86

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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.