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Finding the Fourth Proportional to 186,714.70, 280,069.80 and 131,715.70

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Solution

The fourth proportional to 186,714.70, 280,069.80 and 131,715.70 is: 197,571.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,714.70 : 280,069.80 = 131,715.70 : x
  2. Step 2: Convert to fraction form
    186,714.70/280,069.80 = 131,715.70/x
  3. Step 3: Cross multiply
    186,714.70x = 280,069.80 × 131,715.70
  4. Step 4: Simplify right side
    186,714.70x = 36,889,589,755.86
  5. Step 5: Solve for x
    x = 36,889,589,755.86/186,714.70
  6. Step 6: Final answer
    x = 197,571.96

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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.