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Finding the Fourth Proportional to 139,234.34, 192,123.69 and 82,668.26

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Solution

The fourth proportional to 139,234.34, 192,123.69 and 82,668.26 is: 114,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.34 : 192,123.69 = 82,668.26 : x
  2. Step 2: Convert to fraction form
    139,234.34/192,123.69 = 82,668.26/x
  3. Step 3: Cross multiply
    139,234.34x = 192,123.69 × 82,668.26
  4. Step 4: Simplify right side
    139,234.34x = 15,882,531,157.08
  5. Step 5: Solve for x
    x = 15,882,531,157.08/139,234.34
  6. Step 6: Final answer
    x = 114,070.50

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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.