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Finding the Fourth Proportional to 398,783,953.80, 598,175,930.70 and 183,793,105.80

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Solution

The fourth proportional to 398,783,953.80, 598,175,930.70 and 183,793,105.80 is: 275,689,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,783,953.80 : 598,175,930.70 = 183,793,105.80 : x
  2. Step 2: Convert to fraction form
    398,783,953.80/598,175,930.70 = 183,793,105.80/x
  3. Step 3: Cross multiply
    398,783,953.80x = 598,175,930.70 × 183,793,105.80
  4. Step 4: Simplify right side
    398,783,953.80x = 109,940,612,118,158,576
  5. Step 5: Solve for x
    x = 109,940,612,118,158,576/398,783,953.80
  6. Step 6: Final answer
    x = 275,689,658.70

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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.