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Finding the Fourth Proportional to 225,623.20, 338,425.20 and 92,459.68

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Solution

The fourth proportional to 225,623.20, 338,425.20 and 92,459.68 is: 138,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,623.20 : 338,425.20 = 92,459.68 : x
  2. Step 2: Convert to fraction form
    225,623.20/338,425.20 = 92,459.68/x
  3. Step 3: Cross multiply
    225,623.20x = 338,425.20 × 92,459.68
  4. Step 4: Simplify right side
    225,623.20x = 31,290,685,695.94
  5. Step 5: Solve for x
    x = 31,290,685,695.94/225,623.20
  6. Step 6: Final answer
    x = 138,685.59

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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.