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Finding the Fourth Proportional to 168,047.91, 231,903.36 and 91,567.91

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Solution

The fourth proportional to 168,047.91, 231,903.36 and 91,567.91 is: 126,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,047.91 : 231,903.36 = 91,567.91 : x
  2. Step 2: Convert to fraction form
    168,047.91/231,903.36 = 91,567.91/x
  3. Step 3: Cross multiply
    168,047.91x = 231,903.36 × 91,567.91
  4. Step 4: Simplify right side
    168,047.91x = 21,234,905,997.18
  5. Step 5: Solve for x
    x = 21,234,905,997.18/168,047.91
  6. Step 6: Final answer
    x = 126,362.21

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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.