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Finding the Fourth Proportional to 75,279.49, 112,919.45 and 25,394.63

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Solution

The fourth proportional to 75,279.49, 112,919.45 and 25,394.63 is: 38,092.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.49 : 112,919.45 = 25,394.63 : x
  2. Step 2: Convert to fraction form
    75,279.49/112,919.45 = 25,394.63/x
  3. Step 3: Cross multiply
    75,279.49x = 112,919.45 × 25,394.63
  4. Step 4: Simplify right side
    75,279.49x = 2,867,546,960.98
  5. Step 5: Solve for x
    x = 2,867,546,960.98/75,279.49
  6. Step 6: Final answer
    x = 38,092.01

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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.