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Finding the Fourth Proportional to 104,647.60, 156,971.40 and 34,517.80

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Solution

The fourth proportional to 104,647.60, 156,971.40 and 34,517.80 is: 51,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,647.60 : 156,971.40 = 34,517.80 : x
  2. Step 2: Convert to fraction form
    104,647.60/156,971.40 = 34,517.80/x
  3. Step 3: Cross multiply
    104,647.60x = 156,971.40 × 34,517.80
  4. Step 4: Simplify right side
    104,647.60x = 5,418,307,390.92
  5. Step 5: Solve for x
    x = 5,418,307,390.92/104,647.60
  6. Step 6: Final answer
    x = 51,776.70

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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.