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Finding the Fourth Proportional to 203,062.80, 304,594.20 and 55,318.80

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Solution

The fourth proportional to 203,062.80, 304,594.20 and 55,318.80 is: 82,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,062.80 : 304,594.20 = 55,318.80 : x
  2. Step 2: Convert to fraction form
    203,062.80/304,594.20 = 55,318.80/x
  3. Step 3: Cross multiply
    203,062.80x = 304,594.20 × 55,318.80
  4. Step 4: Simplify right side
    203,062.80x = 16,849,785,630.96
  5. Step 5: Solve for x
    x = 16,849,785,630.96/203,062.80
  6. Step 6: Final answer
    x = 82,978.20

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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.