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Finding the Fourth Proportional to 73,102.80, 109,697.40 and 53,331.60

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Solution

The fourth proportional to 73,102.80, 109,697.40 and 53,331.60 is: 80,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,102.80 : 109,697.40 = 53,331.60 : x
  2. Step 2: Convert to fraction form
    73,102.80/109,697.40 = 53,331.60/x
  3. Step 3: Cross multiply
    73,102.80x = 109,697.40 × 53,331.60
  4. Step 4: Simplify right side
    73,102.80x = 5,850,337,857.84
  5. Step 5: Solve for x
    x = 5,850,337,857.84/73,102.80
  6. Step 6: Final answer
    x = 80,028.92

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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.