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Finding the Fourth Proportional to 321,840,911.70, 482,761,367.55 and 117,375,657.30

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Solution

The fourth proportional to 321,840,911.70, 482,761,367.55 and 117,375,657.30 is: 176,063,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,840,911.70 : 482,761,367.55 = 117,375,657.30 : x
  2. Step 2: Convert to fraction form
    321,840,911.70/482,761,367.55 = 117,375,657.30/x
  3. Step 3: Cross multiply
    321,840,911.70x = 482,761,367.55 × 117,375,657.30
  4. Step 4: Simplify right side
    321,840,911.70x = 56,664,432,835,228,144
  5. Step 5: Solve for x
    x = 56,664,432,835,228,144/321,840,911.70
  6. Step 6: Final answer
    x = 176,063,485.95

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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.