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Finding the Fourth Proportional to 519,695,999.70, 779,543,999.55 and 156,190,355.70

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Solution

The fourth proportional to 519,695,999.70, 779,543,999.55 and 156,190,355.70 is: 234,285,533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,695,999.70 : 779,543,999.55 = 156,190,355.70 : x
  2. Step 2: Convert to fraction form
    519,695,999.70/779,543,999.55 = 156,190,355.70/x
  3. Step 3: Cross multiply
    519,695,999.70x = 779,543,999.55 × 156,190,355.70
  4. Step 4: Simplify right side
    519,695,999.70x = 121,757,254,573,515,120
  5. Step 5: Solve for x
    x = 121,757,254,573,515,120/519,695,999.70
  6. Step 6: Final answer
    x = 234,285,533.55

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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.