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Finding the Fourth Proportional to 996,788,812.56, 1,375,596,310.32 and 550,781,059.44

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Solution

The fourth proportional to 996,788,812.56, 1,375,596,310.32 and 550,781,059.44 is: 760,093,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,788,812.56 : 1,375,596,310.32 = 550,781,059.44 : x
  2. Step 2: Convert to fraction form
    996,788,812.56/1,375,596,310.32 = 550,781,059.44/x
  3. Step 3: Cross multiply
    996,788,812.56x = 1,375,596,310.32 × 550,781,059.44
  4. Step 4: Simplify right side
    996,788,812.56x = 757,652,393,159,804,672
  5. Step 5: Solve for x
    x = 757,652,393,159,804,672/996,788,812.56
  6. Step 6: Final answer
    x = 760,093,194.88

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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.