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Finding the Fourth Proportional to 84,328.61, 125,877.69 and 73,687.73

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Solution

The fourth proportional to 84,328.61, 125,877.69 and 73,687.73 is: 109,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,328.61 : 125,877.69 = 73,687.73 : x
  2. Step 2: Convert to fraction form
    84,328.61/125,877.69 = 73,687.73/x
  3. Step 3: Cross multiply
    84,328.61x = 125,877.69 × 73,687.73
  4. Step 4: Simplify right side
    84,328.61x = 9,275,640,604.36
  5. Step 5: Solve for x
    x = 9,275,640,604.36/84,328.61
  6. Step 6: Final answer
    x = 109,994.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.