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Finding the Fourth Proportional to 169,057.74, 253,491.81 and 115,809.87

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Solution

The fourth proportional to 169,057.74, 253,491.81 and 115,809.87 is: 173,649.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,057.74 : 253,491.81 = 115,809.87 : x
  2. Step 2: Convert to fraction form
    169,057.74/253,491.81 = 115,809.87/x
  3. Step 3: Cross multiply
    169,057.74x = 253,491.81 × 115,809.87
  4. Step 4: Simplify right side
    169,057.74x = 29,356,853,562.16
  5. Step 5: Solve for x
    x = 29,356,853,562.16/169,057.74
  6. Step 6: Final answer
    x = 173,649.86

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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.