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Finding the Fourth Proportional to 106,512.80, 159,769.20 and 73,335.20

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Solution

The fourth proportional to 106,512.80, 159,769.20 and 73,335.20 is: 110,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,512.80 : 159,769.20 = 73,335.20 : x
  2. Step 2: Convert to fraction form
    106,512.80/159,769.20 = 73,335.20/x
  3. Step 3: Cross multiply
    106,512.80x = 159,769.20 × 73,335.20
  4. Step 4: Simplify right side
    106,512.80x = 11,716,706,235.84
  5. Step 5: Solve for x
    x = 11,716,706,235.84/106,512.80
  6. Step 6: Final answer
    x = 110,002.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.