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Finding the Fourth Proportional to 127,679.72, 176,033.30 and 104,623.80

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Solution

The fourth proportional to 127,679.72, 176,033.30 and 104,623.80 is: 144,245.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,679.72 : 176,033.30 = 104,623.80 : x
  2. Step 2: Convert to fraction form
    127,679.72/176,033.30 = 104,623.80/x
  3. Step 3: Cross multiply
    127,679.72x = 176,033.30 × 104,623.80
  4. Step 4: Simplify right side
    127,679.72x = 18,417,272,772.54
  5. Step 5: Solve for x
    x = 18,417,272,772.54/127,679.72
  6. Step 6: Final answer
    x = 144,245.87

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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.