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Finding the Fourth Proportional to 111,009.20, 166,512.90 and 47,873.96

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Solution

The fourth proportional to 111,009.20, 166,512.90 and 47,873.96 is: 71,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,009.20 : 166,512.90 = 47,873.96 : x
  2. Step 2: Convert to fraction form
    111,009.20/166,512.90 = 47,873.96/x
  3. Step 3: Cross multiply
    111,009.20x = 166,512.90 × 47,873.96
  4. Step 4: Simplify right side
    111,009.20x = 7,971,631,914.08
  5. Step 5: Solve for x
    x = 7,971,631,914.08/111,009.20
  6. Step 6: Final answer
    x = 71,810.55

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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.