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Finding the Fourth Proportional to 140,755.73, 194,234.15 and 77,089.73

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Solution

The fourth proportional to 140,755.73, 194,234.15 and 77,089.73 is: 106,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,755.73 : 194,234.15 = 77,089.73 : x
  2. Step 2: Convert to fraction form
    140,755.73/194,234.15 = 77,089.73/x
  3. Step 3: Cross multiply
    140,755.73x = 194,234.15 × 77,089.73
  4. Step 4: Simplify right side
    140,755.73x = 14,973,457,401.83
  5. Step 5: Solve for x
    x = 14,973,457,401.83/140,755.73
  6. Step 6: Final answer
    x = 106,379.03

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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.