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Finding the Fourth Proportional to 77,329.92, 115,994.88 and 18,961.92

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Solution

The fourth proportional to 77,329.92, 115,994.88 and 18,961.92 is: 28,442.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,329.92 : 115,994.88 = 18,961.92 : x
  2. Step 2: Convert to fraction form
    77,329.92/115,994.88 = 18,961.92/x
  3. Step 3: Cross multiply
    77,329.92x = 115,994.88 × 18,961.92
  4. Step 4: Simplify right side
    77,329.92x = 2,199,485,634.97
  5. Step 5: Solve for x
    x = 2,199,485,634.97/77,329.92
  6. Step 6: Final answer
    x = 28,442.88

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1.5x scale

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.