Home / 68,198,511.16-102,285,442.96-19,664,432.20

Finding the Fourth Proportional to 68,198,511.16, 102,285,442.96 and 19,664,432.20

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Solution

The fourth proportional to 68,198,511.16, 102,285,442.96 and 19,664,432.20 is: 29,493,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,198,511.16 : 102,285,442.96 = 19,664,432.20 : x
  2. Step 2: Convert to fraction form
    68,198,511.16/102,285,442.96 = 19,664,432.20/x
  3. Step 3: Cross multiply
    68,198,511.16x = 102,285,442.96 × 19,664,432.20
  4. Step 4: Simplify right side
    68,198,511.16x = 2,011,385,158,133,887
  5. Step 5: Solve for x
    x = 2,011,385,158,133,887/68,198,511.16
  6. Step 6: Final answer
    x = 29,493,094.85

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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.