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Finding the Fourth Proportional to 415,353.44, 623,021.22 and 115,826.06

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Solution

The fourth proportional to 415,353.44, 623,021.22 and 115,826.06 is: 173,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,353.44 : 623,021.22 = 115,826.06 : x
  2. Step 2: Convert to fraction form
    415,353.44/623,021.22 = 115,826.06/x
  3. Step 3: Cross multiply
    415,353.44x = 623,021.22 × 115,826.06
  4. Step 4: Simplify right side
    415,353.44x = 72,162,093,208.99
  5. Step 5: Solve for x
    x = 72,162,093,208.99/415,353.44
  6. Step 6: Final answer
    x = 173,736.60

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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.