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Finding the Fourth Proportional to 206,845.79, 285,454.61 and 116,199.80

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Solution

The fourth proportional to 206,845.79, 285,454.61 and 116,199.80 is: 160,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,845.79 : 285,454.61 = 116,199.80 : x
  2. Step 2: Convert to fraction form
    206,845.79/285,454.61 = 116,199.80/x
  3. Step 3: Cross multiply
    206,845.79x = 285,454.61 × 116,199.80
  4. Step 4: Simplify right side
    206,845.79x = 33,169,766,582.81
  5. Step 5: Solve for x
    x = 33,169,766,582.81/206,845.79
  6. Step 6: Final answer
    x = 160,359.89

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1.5x scale

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.