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Finding the Fourth Proportional to 108,975.92, 150,382.58 and 61,231.28

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Solution

The fourth proportional to 108,975.92, 150,382.58 and 61,231.28 is: 84,496.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,975.92 : 150,382.58 = 61,231.28 : x
  2. Step 2: Convert to fraction form
    108,975.92/150,382.58 = 61,231.28/x
  3. Step 3: Cross multiply
    108,975.92x = 150,382.58 × 61,231.28
  4. Step 4: Simplify right side
    108,975.92x = 9,208,117,863.10
  5. Step 5: Solve for x
    x = 9,208,117,863.10/108,975.92
  6. Step 6: Final answer
    x = 84,496.81

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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.