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Finding the Fourth Proportional to 107,800.80, 161,701.20 and 104,728.80

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Solution

The fourth proportional to 107,800.80, 161,701.20 and 104,728.80 is: 157,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,800.80 : 161,701.20 = 104,728.80 : x
  2. Step 2: Convert to fraction form
    107,800.80/161,701.20 = 104,728.80/x
  3. Step 3: Cross multiply
    107,800.80x = 161,701.20 × 104,728.80
  4. Step 4: Simplify right side
    107,800.80x = 16,934,772,634.56
  5. Step 5: Solve for x
    x = 16,934,772,634.56/107,800.80
  6. Step 6: Final answer
    x = 157,093.20

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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.