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Finding the Fourth Proportional to 127,561.79, 176,056.84 and 73,879.44

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Solution

The fourth proportional to 127,561.79, 176,056.84 and 73,879.44 is: 101,966.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,561.79 : 176,056.84 = 73,879.44 : x
  2. Step 2: Convert to fraction form
    127,561.79/176,056.84 = 73,879.44/x
  3. Step 3: Cross multiply
    127,561.79x = 176,056.84 × 73,879.44
  4. Step 4: Simplify right side
    127,561.79x = 13,006,981,169.83
  5. Step 5: Solve for x
    x = 13,006,981,169.83/127,561.79
  6. Step 6: Final answer
    x = 101,966.13

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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.