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Finding the Fourth Proportional to 206,690.20, 310,035.30 and 184,139.80

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Solution

The fourth proportional to 206,690.20, 310,035.30 and 184,139.80 is: 276,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,690.20 : 310,035.30 = 184,139.80 : x
  2. Step 2: Convert to fraction form
    206,690.20/310,035.30 = 184,139.80/x
  3. Step 3: Cross multiply
    206,690.20x = 310,035.30 × 184,139.80
  4. Step 4: Simplify right side
    206,690.20x = 57,089,838,134.94
  5. Step 5: Solve for x
    x = 57,089,838,134.94/206,690.20
  6. Step 6: Final answer
    x = 276,209.70

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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.