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Finding the Fourth Proportional to 230,745.47, 346,272.65 and 80,986.46

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Solution

The fourth proportional to 230,745.47, 346,272.65 and 80,986.46 is: 121,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,745.47 : 346,272.65 = 80,986.46 : x
  2. Step 2: Convert to fraction form
    230,745.47/346,272.65 = 80,986.46/x
  3. Step 3: Cross multiply
    230,745.47x = 346,272.65 × 80,986.46
  4. Step 4: Simplify right side
    230,745.47x = 28,043,396,118.32
  5. Step 5: Solve for x
    x = 28,043,396,118.32/230,745.47
  6. Step 6: Final answer
    x = 121,533.90

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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.