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Finding the Fourth Proportional to 206,790.60, 310,185.90 and 73,675.20

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Solution

The fourth proportional to 206,790.60, 310,185.90 and 73,675.20 is: 110,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,790.60 : 310,185.90 = 73,675.20 : x
  2. Step 2: Convert to fraction form
    206,790.60/310,185.90 = 73,675.20/x
  3. Step 3: Cross multiply
    206,790.60x = 310,185.90 × 73,675.20
  4. Step 4: Simplify right side
    206,790.60x = 22,853,008,219.68
  5. Step 5: Solve for x
    x = 22,853,008,219.68/206,790.60
  6. Step 6: Final answer
    x = 110,512.80

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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.