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Finding the Fourth Proportional to 107,481.80, 148,321.70 and 61,539.92

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Solution

The fourth proportional to 107,481.80, 148,321.70 and 61,539.92 is: 84,923.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,481.80 : 148,321.70 = 61,539.92 : x
  2. Step 2: Convert to fraction form
    107,481.80/148,321.70 = 61,539.92/x
  3. Step 3: Cross multiply
    107,481.80x = 148,321.70 × 61,539.92
  4. Step 4: Simplify right side
    107,481.80x = 9,127,705,289.94
  5. Step 5: Solve for x
    x = 9,127,705,289.94/107,481.80
  6. Step 6: Final answer
    x = 84,923.26

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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.