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Finding the Fourth Proportional to 73,128.69, 109,670.34 and 26,375.49

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Solution

The fourth proportional to 73,128.69, 109,670.34 and 26,375.49 is: 39,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.69 : 109,670.34 = 26,375.49 : x
  2. Step 2: Convert to fraction form
    73,128.69/109,670.34 = 26,375.49/x
  3. Step 3: Cross multiply
    73,128.69x = 109,670.34 × 26,375.49
  4. Step 4: Simplify right side
    73,128.69x = 2,892,608,955.97
  5. Step 5: Solve for x
    x = 2,892,608,955.97/73,128.69
  6. Step 6: Final answer
    x = 39,555.05

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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.