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Finding the Fourth Proportional to 136,576, 188,526.72 and 91,889.92

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Solution

The fourth proportional to 136,576, 188,526.72 and 91,889.92 is: 126,842.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,576 : 188,526.72 = 91,889.92 : x
  2. Step 2: Convert to fraction form
    136,576/188,526.72 = 91,889.92/x
  3. Step 3: Cross multiply
    136,576x = 188,526.72 × 91,889.92
  4. Step 4: Simplify right side
    136,576x = 17,323,705,218.66
  5. Step 5: Solve for x
    x = 17,323,705,218.66/136,576
  6. Step 6: Final answer
    x = 126,842.97

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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.