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Finding the Fourth Proportional to 98,813, 136,361.94 and 54,101

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Solution

The fourth proportional to 98,813, 136,361.94 and 54,101 is: 74,659.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,813 : 136,361.94 = 54,101 : x
  2. Step 2: Convert to fraction form
    98,813/136,361.94 = 54,101/x
  3. Step 3: Cross multiply
    98,813x = 136,361.94 × 54,101
  4. Step 4: Simplify right side
    98,813x = 7,377,317,315.94
  5. Step 5: Solve for x
    x = 7,377,317,315.94/98,813
  6. Step 6: Final answer
    x = 74,659.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.