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Finding the Fourth Proportional to 206,789.80, 310,015.18 and 73,594.21

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Solution

The fourth proportional to 206,789.80, 310,015.18 and 73,594.21 is: 110,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,789.80 : 310,015.18 = 73,594.21 : x
  2. Step 2: Convert to fraction form
    206,789.80/310,015.18 = 73,594.21/x
  3. Step 3: Cross multiply
    206,789.80x = 310,015.18 × 73,594.21
  4. Step 4: Simplify right side
    206,789.80x = 22,815,322,260.11
  5. Step 5: Solve for x
    x = 22,815,322,260.11/206,789.80
  6. Step 6: Final answer
    x = 110,330.98

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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.