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Finding the Fourth Proportional to 80,388.79, 110,928.65 and 44,578.17

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Solution

The fourth proportional to 80,388.79, 110,928.65 and 44,578.17 is: 61,513.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,388.79 : 110,928.65 = 44,578.17 : x
  2. Step 2: Convert to fraction form
    80,388.79/110,928.65 = 44,578.17/x
  3. Step 3: Cross multiply
    80,388.79x = 110,928.65 × 44,578.17
  4. Step 4: Simplify right side
    80,388.79x = 4,944,995,994.68
  5. Step 5: Solve for x
    x = 4,944,995,994.68/80,388.79
  6. Step 6: Final answer
    x = 61,513.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.