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Finding the Fourth Proportional to 225,509.40, 338,263.87 and 92,389.90

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Solution

The fourth proportional to 225,509.40, 338,263.87 and 92,389.90 is: 138,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,509.40 : 338,263.87 = 92,389.90 : x
  2. Step 2: Convert to fraction form
    225,509.40/338,263.87 = 92,389.90/x
  3. Step 3: Cross multiply
    225,509.40x = 338,263.87 × 92,389.90
  4. Step 4: Simplify right side
    225,509.40x = 31,252,165,122.91
  5. Step 5: Solve for x
    x = 31,252,165,122.91/225,509.40
  6. Step 6: Final answer
    x = 138,584.76

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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.