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Finding the Fourth Proportional to 95,978.70, 143,966.70 and 43,388.10

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Solution

The fourth proportional to 95,978.70, 143,966.70 and 43,388.10 is: 65,081.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,978.70 : 143,966.70 = 43,388.10 : x
  2. Step 2: Convert to fraction form
    95,978.70/143,966.70 = 43,388.10/x
  3. Step 3: Cross multiply
    95,978.70x = 143,966.70 × 43,388.10
  4. Step 4: Simplify right side
    95,978.70x = 6,246,441,576.27
  5. Step 5: Solve for x
    x = 6,246,441,576.27/95,978.70
  6. Step 6: Final answer
    x = 65,081.54

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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.