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Finding the Fourth Proportional to 115,991.96, 160,066.26 and 67,590.86

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Solution

The fourth proportional to 115,991.96, 160,066.26 and 67,590.86 is: 93,273.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,991.96 : 160,066.26 = 67,590.86 : x
  2. Step 2: Convert to fraction form
    115,991.96/160,066.26 = 67,590.86/x
  3. Step 3: Cross multiply
    115,991.96x = 160,066.26 × 67,590.86
  4. Step 4: Simplify right side
    115,991.96x = 10,819,015,370.05
  5. Step 5: Solve for x
    x = 10,819,015,370.05/115,991.96
  6. Step 6: Final answer
    x = 93,273.84

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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.