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Finding the Fourth Proportional to 206,688.66, 285,233.85 and 114,805.50

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Solution

The fourth proportional to 206,688.66, 285,233.85 and 114,805.50 is: 158,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,688.66 : 285,233.85 = 114,805.50 : x
  2. Step 2: Convert to fraction form
    206,688.66/285,233.85 = 114,805.50/x
  3. Step 3: Cross multiply
    206,688.66x = 285,233.85 × 114,805.50
  4. Step 4: Simplify right side
    206,688.66x = 32,746,414,766.18
  5. Step 5: Solve for x
    x = 32,746,414,766.18/206,688.66
  6. Step 6: Final answer
    x = 158,433.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.