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Finding the Fourth Proportional to 368,712.76, 553,183.97 and 132,057.49

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Solution

The fourth proportional to 368,712.76, 553,183.97 and 132,057.49 is: 198,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,712.76 : 553,183.97 = 132,057.49 : x
  2. Step 2: Convert to fraction form
    368,712.76/553,183.97 = 132,057.49/x
  3. Step 3: Cross multiply
    368,712.76x = 553,183.97 × 132,057.49
  4. Step 4: Simplify right side
    368,712.76x = 73,052,086,586.44
  5. Step 5: Solve for x
    x = 73,052,086,586.44/368,712.76
  6. Step 6: Final answer
    x = 198,127.36

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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.