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Finding the Fourth Proportional to 106,815.60, 160,174.80 and 47,620.80

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Solution

The fourth proportional to 106,815.60, 160,174.80 and 47,620.80 is: 71,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,815.60 : 160,174.80 = 47,620.80 : x
  2. Step 2: Convert to fraction form
    106,815.60/160,174.80 = 47,620.80/x
  3. Step 3: Cross multiply
    106,815.60x = 160,174.80 × 47,620.80
  4. Step 4: Simplify right side
    106,815.60x = 7,627,652,115.84
  5. Step 5: Solve for x
    x = 7,627,652,115.84/106,815.60
  6. Step 6: Final answer
    x = 71,409.53

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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.