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Finding the Fourth Proportional to 117,166.28, 161,689.14 and 63,451.28

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Solution

The fourth proportional to 117,166.28, 161,689.14 and 63,451.28 is: 87,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,166.28 : 161,689.14 = 63,451.28 : x
  2. Step 2: Convert to fraction form
    117,166.28/161,689.14 = 63,451.28/x
  3. Step 3: Cross multiply
    117,166.28x = 161,689.14 × 63,451.28
  4. Step 4: Simplify right side
    117,166.28x = 10,259,382,086.65
  5. Step 5: Solve for x
    x = 10,259,382,086.65/117,166.28
  6. Step 6: Final answer
    x = 87,562.59

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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.