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Finding the Fourth Proportional to 58,385.88, 87,578.79 and 18,942.99

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Solution

The fourth proportional to 58,385.88, 87,578.79 and 18,942.99 is: 28,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,385.88 : 87,578.79 = 18,942.99 : x
  2. Step 2: Convert to fraction form
    58,385.88/87,578.79 = 18,942.99/x
  3. Step 3: Cross multiply
    58,385.88x = 87,578.79 × 18,942.99
  4. Step 4: Simplify right side
    58,385.88x = 1,659,004,143.18
  5. Step 5: Solve for x
    x = 1,659,004,143.18/58,385.88
  6. Step 6: Final answer
    x = 28,414.48

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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.