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Finding the Fourth Proportional to 108,958.13, 150,361.32 and 61,210.46

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Solution

The fourth proportional to 108,958.13, 150,361.32 and 61,210.46 is: 84,469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,958.13 : 150,361.32 = 61,210.46 : x
  2. Step 2: Convert to fraction form
    108,958.13/150,361.32 = 61,210.46/x
  3. Step 3: Cross multiply
    108,958.13x = 150,361.32 × 61,210.46
  4. Step 4: Simplify right side
    108,958.13x = 9,203,685,563.41
  5. Step 5: Solve for x
    x = 9,203,685,563.41/108,958.13
  6. Step 6: Final answer
    x = 84,469.93

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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.