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Finding the Fourth Proportional to 73,069.80, 109,647.90 and 53,298.60

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Solution

The fourth proportional to 73,069.80, 109,647.90 and 53,298.60 is: 79,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,069.80 : 109,647.90 = 53,298.60 : x
  2. Step 2: Convert to fraction form
    73,069.80/109,647.90 = 53,298.60/x
  3. Step 3: Cross multiply
    73,069.80x = 109,647.90 × 53,298.60
  4. Step 4: Simplify right side
    73,069.80x = 5,844,079,562.94
  5. Step 5: Solve for x
    x = 5,844,079,562.94/73,069.80
  6. Step 6: Final answer
    x = 79,979.41

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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.