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Finding the Fourth Proportional to 124,481.56, 171,735.24 and 76,651.88

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Solution

The fourth proportional to 124,481.56, 171,735.24 and 76,651.88 is: 105,749.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,481.56 : 171,735.24 = 76,651.88 : x
  2. Step 2: Convert to fraction form
    124,481.56/171,735.24 = 76,651.88/x
  3. Step 3: Cross multiply
    124,481.56x = 171,735.24 × 76,651.88
  4. Step 4: Simplify right side
    124,481.56x = 13,163,829,008.25
  5. Step 5: Solve for x
    x = 13,163,829,008.25/124,481.56
  6. Step 6: Final answer
    x = 105,749.23

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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.