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Finding the Fourth Proportional to 664,006,631.20, 996,009,946.80 and 654,936,704.80

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Solution

The fourth proportional to 664,006,631.20, 996,009,946.80 and 654,936,704.80 is: 982,405,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,006,631.20 : 996,009,946.80 = 654,936,704.80 : x
  2. Step 2: Convert to fraction form
    664,006,631.20/996,009,946.80 = 654,936,704.80/x
  3. Step 3: Cross multiply
    664,006,631.20x = 996,009,946.80 × 654,936,704.80
  4. Step 4: Simplify right side
    664,006,631.20x = 652,323,472,505,215,232
  5. Step 5: Solve for x
    x = 652,323,472,505,215,232/664,006,631.20
  6. Step 6: Final answer
    x = 982,405,057.20

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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.