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Finding the Fourth Proportional to 206,373.60, 284,674.90 and 129,771.43

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Solution

The fourth proportional to 206,373.60, 284,674.90 and 129,771.43 is: 179,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,373.60 : 284,674.90 = 129,771.43 : x
  2. Step 2: Convert to fraction form
    206,373.60/284,674.90 = 129,771.43/x
  3. Step 3: Cross multiply
    206,373.60x = 284,674.90 × 129,771.43
  4. Step 4: Simplify right side
    206,373.60x = 36,942,668,858.11
  5. Step 5: Solve for x
    x = 36,942,668,858.11/206,373.60
  6. Step 6: Final answer
    x = 179,008.70

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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.