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Finding the Fourth Proportional to 70,563.96, 105,783.64 and 53,997.96

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Solution

The fourth proportional to 70,563.96, 105,783.64 and 53,997.96 is: 80,949.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,563.96 : 105,783.64 = 53,997.96 : x
  2. Step 2: Convert to fraction form
    70,563.96/105,783.64 = 53,997.96/x
  3. Step 3: Cross multiply
    70,563.96x = 105,783.64 × 53,997.96
  4. Step 4: Simplify right side
    70,563.96x = 5,712,100,761.37
  5. Step 5: Solve for x
    x = 5,712,100,761.37/70,563.96
  6. Step 6: Final answer
    x = 80,949.27

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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.