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Finding the Fourth Proportional to 186,739.20, 280,108.80 and 134,251.20

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Solution

The fourth proportional to 186,739.20, 280,108.80 and 134,251.20 is: 201,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,739.20 : 280,108.80 = 134,251.20 : x
  2. Step 2: Convert to fraction form
    186,739.20/280,108.80 = 134,251.20/x
  3. Step 3: Cross multiply
    186,739.20x = 280,108.80 × 134,251.20
  4. Step 4: Simplify right side
    186,739.20x = 37,604,942,530.56
  5. Step 5: Solve for x
    x = 37,604,942,530.56/186,739.20
  6. Step 6: Final answer
    x = 201,376.80

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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.