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Finding the Fourth Proportional to 58,451.20, 87,619.20 and 28,873.60

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Solution

The fourth proportional to 58,451.20, 87,619.20 and 28,873.60 is: 43,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,451.20 : 87,619.20 = 28,873.60 : x
  2. Step 2: Convert to fraction form
    58,451.20/87,619.20 = 28,873.60/x
  3. Step 3: Cross multiply
    58,451.20x = 87,619.20 × 28,873.60
  4. Step 4: Simplify right side
    58,451.20x = 2,529,881,733.12
  5. Step 5: Solve for x
    x = 2,529,881,733.12/58,451.20
  6. Step 6: Final answer
    x = 43,281.95

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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.