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Finding the Fourth Proportional to 100,922.45, 139,272.96 and 58,505.58

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Solution

The fourth proportional to 100,922.45, 139,272.96 and 58,505.58 is: 80,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,922.45 : 139,272.96 = 58,505.58 : x
  2. Step 2: Convert to fraction form
    100,922.45/139,272.96 = 58,505.58/x
  3. Step 3: Cross multiply
    100,922.45x = 139,272.96 × 58,505.58
  4. Step 4: Simplify right side
    100,922.45x = 8,148,245,303.12
  5. Step 5: Solve for x
    x = 8,148,245,303.12/100,922.45
  6. Step 6: Final answer
    x = 80,737.69

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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.