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Finding the Fourth Proportional to 58,449.20, 87,616.20 and 28,871.60

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Solution

The fourth proportional to 58,449.20, 87,616.20 and 28,871.60 is: 43,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,449.20 : 87,616.20 = 28,871.60 : x
  2. Step 2: Convert to fraction form
    58,449.20/87,616.20 = 28,871.60/x
  3. Step 3: Cross multiply
    58,449.20x = 87,616.20 × 28,871.60
  4. Step 4: Simplify right side
    58,449.20x = 2,529,619,879.92
  5. Step 5: Solve for x
    x = 2,529,619,879.92/58,449.20
  6. Step 6: Final answer
    x = 43,278.95

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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.