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Finding the Fourth Proportional to 104,456.40, 156,684.60 and 79,573.20

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Solution

The fourth proportional to 104,456.40, 156,684.60 and 79,573.20 is: 119,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,456.40 : 156,684.60 = 79,573.20 : x
  2. Step 2: Convert to fraction form
    104,456.40/156,684.60 = 79,573.20/x
  3. Step 3: Cross multiply
    104,456.40x = 156,684.60 × 79,573.20
  4. Step 4: Simplify right side
    104,456.40x = 12,467,895,012.72
  5. Step 5: Solve for x
    x = 12,467,895,012.72/104,456.40
  6. Step 6: Final answer
    x = 119,359.80

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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.