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Finding the Fourth Proportional to 124,954.80, 187,475.40 and 120,634.80

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Solution

The fourth proportional to 124,954.80, 187,475.40 and 120,634.80 is: 180,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,954.80 : 187,475.40 = 120,634.80 : x
  2. Step 2: Convert to fraction form
    124,954.80/187,475.40 = 120,634.80/x
  3. Step 3: Cross multiply
    124,954.80x = 187,475.40 × 120,634.80
  4. Step 4: Simplify right side
    124,954.80x = 22,616,057,383.92
  5. Step 5: Solve for x
    x = 22,616,057,383.92/124,954.80
  6. Step 6: Final answer
    x = 180,993.91

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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.