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Finding the Fourth Proportional to 339,277.20, 508,818.60 and 102,562.80

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Solution

The fourth proportional to 339,277.20, 508,818.60 and 102,562.80 is: 153,814.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,277.20 : 508,818.60 = 102,562.80 : x
  2. Step 2: Convert to fraction form
    339,277.20/508,818.60 = 102,562.80/x
  3. Step 3: Cross multiply
    339,277.20x = 508,818.60 × 102,562.80
  4. Step 4: Simplify right side
    339,277.20x = 52,185,860,308.08
  5. Step 5: Solve for x
    x = 52,185,860,308.08/339,277.20
  6. Step 6: Final answer
    x = 153,814.82

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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.