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Finding the Fourth Proportional to 104,654.80, 156,980.94 and 25,769.80

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Solution

The fourth proportional to 104,654.80, 156,980.94 and 25,769.80 is: 38,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,654.80 : 156,980.94 = 25,769.80 : x
  2. Step 2: Convert to fraction form
    104,654.80/156,980.94 = 25,769.80/x
  3. Step 3: Cross multiply
    104,654.80x = 156,980.94 × 25,769.80
  4. Step 4: Simplify right side
    104,654.80x = 4,045,367,427.61
  5. Step 5: Solve for x
    x = 4,045,367,427.61/104,654.80
  6. Step 6: Final answer
    x = 38,654.39

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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.