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Finding the Fourth Proportional to 98,906.39, 136,467.18 and 58,613.21

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Solution

The fourth proportional to 98,906.39, 136,467.18 and 58,613.21 is: 80,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,906.39 : 136,467.18 = 58,613.21 : x
  2. Step 2: Convert to fraction form
    98,906.39/136,467.18 = 58,613.21/x
  3. Step 3: Cross multiply
    98,906.39x = 136,467.18 × 58,613.21
  4. Step 4: Simplify right side
    98,906.39x = 7,998,778,797.11
  5. Step 5: Solve for x
    x = 7,998,778,797.11/98,906.39
  6. Step 6: Final answer
    x = 80,872.22

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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.