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Finding the Fourth Proportional to 95,658.21, 143,415.90 and 65,991.42

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Solution

The fourth proportional to 95,658.21, 143,415.90 and 65,991.42 is: 98,937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,658.21 : 143,415.90 = 65,991.42 : x
  2. Step 2: Convert to fraction form
    95,658.21/143,415.90 = 65,991.42/x
  3. Step 3: Cross multiply
    95,658.21x = 143,415.90 × 65,991.42
  4. Step 4: Simplify right side
    95,658.21x = 9,464,218,891.58
  5. Step 5: Solve for x
    x = 9,464,218,891.58/95,658.21
  6. Step 6: Final answer
    x = 98,937.86

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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.