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Finding the Fourth Proportional to 57,429.60, 86,230.80 and 44,296.80

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Solution

The fourth proportional to 57,429.60, 86,230.80 and 44,296.80 is: 66,511.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,429.60 : 86,230.80 = 44,296.80 : x
  2. Step 2: Convert to fraction form
    57,429.60/86,230.80 = 44,296.80/x
  3. Step 3: Cross multiply
    57,429.60x = 86,230.80 × 44,296.80
  4. Step 4: Simplify right side
    57,429.60x = 3,819,748,501.44
  5. Step 5: Solve for x
    x = 3,819,748,501.44/57,429.60
  6. Step 6: Final answer
    x = 66,511.84

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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.