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Finding the Fourth Proportional to 143,646.44, 215,481.20 and 38,464.52

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Solution

The fourth proportional to 143,646.44, 215,481.20 and 38,464.52 is: 57,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,646.44 : 215,481.20 = 38,464.52 : x
  2. Step 2: Convert to fraction form
    143,646.44/215,481.20 = 38,464.52/x
  3. Step 3: Cross multiply
    143,646.44x = 215,481.20 × 38,464.52
  4. Step 4: Simplify right side
    143,646.44x = 8,288,380,927.02
  5. Step 5: Solve for x
    x = 8,288,380,927.02/143,646.44
  6. Step 6: Final answer
    x = 57,699.87

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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.