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Finding the Fourth Proportional to 127,754.75, 176,112.53 and 81,809.53

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Solution

The fourth proportional to 127,754.75, 176,112.53 and 81,809.53 is: 112,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,754.75 : 176,112.53 = 81,809.53 : x
  2. Step 2: Convert to fraction form
    127,754.75/176,112.53 = 81,809.53/x
  3. Step 3: Cross multiply
    127,754.75x = 176,112.53 × 81,809.53
  4. Step 4: Simplify right side
    127,754.75x = 14,407,682,763.87
  5. Step 5: Solve for x
    x = 14,407,682,763.87/127,754.75
  6. Step 6: Final answer
    x = 112,776.10

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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.