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Finding the Fourth Proportional to 29,610.72, 44,428.56 and 15,756

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Solution

The fourth proportional to 29,610.72, 44,428.56 and 15,756 is: 23,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,610.72 : 44,428.56 = 15,756 : x
  2. Step 2: Convert to fraction form
    29,610.72/44,428.56 = 15,756/x
  3. Step 3: Cross multiply
    29,610.72x = 44,428.56 × 15,756
  4. Step 4: Simplify right side
    29,610.72x = 700,016,391.36
  5. Step 5: Solve for x
    x = 700,016,391.36/29,610.72
  6. Step 6: Final answer
    x = 23,640.64

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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.