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Finding the Fourth Proportional to 70,884.80, 106,327.20 and 61,035.20

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Solution

The fourth proportional to 70,884.80, 106,327.20 and 61,035.20 is: 91,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,884.80 : 106,327.20 = 61,035.20 : x
  2. Step 2: Convert to fraction form
    70,884.80/106,327.20 = 61,035.20/x
  3. Step 3: Cross multiply
    70,884.80x = 106,327.20 × 61,035.20
  4. Step 4: Simplify right side
    70,884.80x = 6,489,701,917.44
  5. Step 5: Solve for x
    x = 6,489,701,917.44/70,884.80
  6. Step 6: Final answer
    x = 91,552.80

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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.