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Finding the Fourth Proportional to 48,728, 73,092.36 and 11,792

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Solution

The fourth proportional to 48,728, 73,092.36 and 11,792 is: 17,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,728 : 73,092.36 = 11,792 : x
  2. Step 2: Convert to fraction form
    48,728/73,092.36 = 11,792/x
  3. Step 3: Cross multiply
    48,728x = 73,092.36 × 11,792
  4. Step 4: Simplify right side
    48,728x = 861,905,109.12
  5. Step 5: Solve for x
    x = 861,905,109.12/48,728
  6. Step 6: Final answer
    x = 17,688.09

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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.