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Finding the Fourth Proportional to 68,361.09, 102,552.57 and 28,929.48

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Solution

The fourth proportional to 68,361.09, 102,552.57 and 28,929.48 is: 43,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,361.09 : 102,552.57 = 28,929.48 : x
  2. Step 2: Convert to fraction form
    68,361.09/102,552.57 = 28,929.48/x
  3. Step 3: Cross multiply
    68,361.09x = 102,552.57 × 28,929.48
  4. Step 4: Simplify right side
    68,361.09x = 2,966,792,522.76
  5. Step 5: Solve for x
    x = 2,966,792,522.76/68,361.09
  6. Step 6: Final answer
    x = 43,398.85

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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.