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Finding the Fourth Proportional to 108,963.76, 150,361.89 and 61,225.06

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Solution

The fourth proportional to 108,963.76, 150,361.89 and 61,225.06 is: 84,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.76 : 150,361.89 = 61,225.06 : x
  2. Step 2: Convert to fraction form
    108,963.76/150,361.89 = 61,225.06/x
  3. Step 3: Cross multiply
    108,963.76x = 150,361.89 × 61,225.06
  4. Step 4: Simplify right side
    108,963.76x = 9,205,915,736.96
  5. Step 5: Solve for x
    x = 9,205,915,736.96/108,963.76
  6. Step 6: Final answer
    x = 84,486.03

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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.