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Finding the Fourth Proportional to 116,992.43, 161,449.58 and 66,015.96

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Solution

The fourth proportional to 116,992.43, 161,449.58 and 66,015.96 is: 91,102.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,992.43 : 161,449.58 = 66,015.96 : x
  2. Step 2: Convert to fraction form
    116,992.43/161,449.58 = 66,015.96/x
  3. Step 3: Cross multiply
    116,992.43x = 161,449.58 × 66,015.96
  4. Step 4: Simplify right side
    116,992.43x = 10,658,249,297.38
  5. Step 5: Solve for x
    x = 10,658,249,297.38/116,992.43
  6. Step 6: Final answer
    x = 91,102.05

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Why These Related Problems?

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