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Finding the Fourth Proportional to 206,884.20, 310,105.76 and 117,946.20

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Solution

The fourth proportional to 206,884.20, 310,105.76 and 117,946.20 is: 176,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,884.20 : 310,105.76 = 117,946.20 : x
  2. Step 2: Convert to fraction form
    206,884.20/310,105.76 = 117,946.20/x
  3. Step 3: Cross multiply
    206,884.20x = 310,105.76 × 117,946.20
  4. Step 4: Simplify right side
    206,884.20x = 36,575,795,990.11
  5. Step 5: Solve for x
    x = 36,575,795,990.11/206,884.20
  6. Step 6: Final answer
    x = 176,793.57

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1.5x scale

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.