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Finding the Fourth Proportional to 140,661.50, 194,203.40 and 125,528.15

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Solution

The fourth proportional to 140,661.50, 194,203.40 and 125,528.15 is: 173,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,661.50 : 194,203.40 = 125,528.15 : x
  2. Step 2: Convert to fraction form
    140,661.50/194,203.40 = 125,528.15/x
  3. Step 3: Cross multiply
    140,661.50x = 194,203.40 × 125,528.15
  4. Step 4: Simplify right side
    140,661.50x = 24,377,993,383.58
  5. Step 5: Solve for x
    x = 24,377,993,383.58/140,661.50
  6. Step 6: Final answer
    x = 173,309.64

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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.