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Finding the Fourth Proportional to 104,649.60, 156,974.40 and 34,519.80

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Solution

The fourth proportional to 104,649.60, 156,974.40 and 34,519.80 is: 51,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,649.60 : 156,974.40 = 34,519.80 : x
  2. Step 2: Convert to fraction form
    104,649.60/156,974.40 = 34,519.80/x
  3. Step 3: Cross multiply
    104,649.60x = 156,974.40 × 34,519.80
  4. Step 4: Simplify right side
    104,649.60x = 5,418,724,893.12
  5. Step 5: Solve for x
    x = 5,418,724,893.12/104,649.60
  6. Step 6: Final answer
    x = 51,779.70

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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.