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Finding the Fourth Proportional to 787,609,672.70, 1,181,414,509.05 and 787,609,672.70

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Solution

The fourth proportional to 787,609,672.70, 1,181,414,509.05 and 787,609,672.70 is: 1,181,414,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,609,672.70 : 1,181,414,509.05 = 787,609,672.70 : x
  2. Step 2: Convert to fraction form
    787,609,672.70/1,181,414,509.05 = 787,609,672.70/x
  3. Step 3: Cross multiply
    787,609,672.70x = 1,181,414,509.05 × 787,609,672.70
  4. Step 4: Simplify right side
    787,609,672.70x = 930,493,494,795,901,696
  5. Step 5: Solve for x
    x = 930,493,494,795,901,696/787,609,672.70
  6. Step 6: Final answer
    x = 1,181,414,509.05

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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.