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Finding the Fourth Proportional to 100,949.42, 139,308.44 and 58,511.90

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Solution

The fourth proportional to 100,949.42, 139,308.44 and 58,511.90 is: 80,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,949.42 : 139,308.44 = 58,511.90 : x
  2. Step 2: Convert to fraction form
    100,949.42/139,308.44 = 58,511.90/x
  3. Step 3: Cross multiply
    100,949.42x = 139,308.44 × 58,511.90
  4. Step 4: Simplify right side
    100,949.42x = 8,151,201,510.44
  5. Step 5: Solve for x
    x = 8,151,201,510.44/100,949.42
  6. Step 6: Final answer
    x = 80,745.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.