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Finding the Fourth Proportional to 95,981.70, 143,971.20 and 43,391.10

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Solution

The fourth proportional to 95,981.70, 143,971.20 and 43,391.10 is: 65,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,981.70 : 143,971.20 = 43,391.10 : x
  2. Step 2: Convert to fraction form
    95,981.70/143,971.20 = 43,391.10/x
  3. Step 3: Cross multiply
    95,981.70x = 143,971.20 × 43,391.10
  4. Step 4: Simplify right side
    95,981.70x = 6,247,068,736.32
  5. Step 5: Solve for x
    x = 6,247,068,736.32/95,981.70
  6. Step 6: Final answer
    x = 65,086.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.