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Finding the Fourth Proportional to 339,163.20, 508,739.53 and 114,681.28

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Solution

The fourth proportional to 339,163.20, 508,739.53 and 114,681.28 is: 172,020.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,163.20 : 508,739.53 = 114,681.28 : x
  2. Step 2: Convert to fraction form
    339,163.20/508,739.53 = 114,681.28/x
  3. Step 3: Cross multiply
    339,163.20x = 508,739.53 × 114,681.28
  4. Step 4: Simplify right side
    339,163.20x = 58,342,900,200.30
  5. Step 5: Solve for x
    x = 58,342,900,200.30/339,163.20
  6. Step 6: Final answer
    x = 172,020.14

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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.