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Finding the Fourth Proportional to 107,912.52, 148,908.42 and 60,161.40

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Solution

The fourth proportional to 107,912.52, 148,908.42 and 60,161.40 is: 83,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,912.52 : 148,908.42 = 60,161.40 : x
  2. Step 2: Convert to fraction form
    107,912.52/148,908.42 = 60,161.40/x
  3. Step 3: Cross multiply
    107,912.52x = 148,908.42 × 60,161.40
  4. Step 4: Simplify right side
    107,912.52x = 8,958,539,018.99
  5. Step 5: Solve for x
    x = 8,958,539,018.99/107,912.52
  6. Step 6: Final answer
    x = 83,016.68

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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.