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Finding the Fourth Proportional to 108,540.49, 149,804.42 and 63,245.32

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Solution

The fourth proportional to 108,540.49, 149,804.42 and 63,245.32 is: 87,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.49 : 149,804.42 = 63,245.32 : x
  2. Step 2: Convert to fraction form
    108,540.49/149,804.42 = 63,245.32/x
  3. Step 3: Cross multiply
    108,540.49x = 149,804.42 × 63,245.32
  4. Step 4: Simplify right side
    108,540.49x = 9,474,428,987.98
  5. Step 5: Solve for x
    x = 9,474,428,987.98/108,540.49
  6. Step 6: Final answer
    x = 87,289.35

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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.