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Finding the Fourth Proportional to 216,894,231.57, 325,114,299.53 and 90,770,575.80

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Solution

The fourth proportional to 216,894,231.57, 325,114,299.53 and 90,770,575.80 is: 136,060,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,894,231.57 : 325,114,299.53 = 90,770,575.80 : x
  2. Step 2: Convert to fraction form
    216,894,231.57/325,114,299.53 = 90,770,575.80/x
  3. Step 3: Cross multiply
    216,894,231.57x = 325,114,299.53 × 90,770,575.80
  4. Step 4: Simplify right side
    216,894,231.57x = 29,510,812,169,151,764
  5. Step 5: Solve for x
    x = 29,510,812,169,151,764/216,894,231.57
  6. Step 6: Final answer
    x = 136,060,843.83

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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.