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Finding the Fourth Proportional to 108,504.48, 149,749.92 and 66,060.48

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Solution

The fourth proportional to 108,504.48, 149,749.92 and 66,060.48 is: 91,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,504.48 : 149,749.92 = 66,060.48 : x
  2. Step 2: Convert to fraction form
    108,504.48/149,749.92 = 66,060.48/x
  3. Step 3: Cross multiply
    108,504.48x = 149,749.92 × 66,060.48
  4. Step 4: Simplify right side
    108,504.48x = 9,892,551,595.16
  5. Step 5: Solve for x
    x = 9,892,551,595.16/108,504.48
  6. Step 6: Final answer
    x = 91,171.83

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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.