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Finding the Fourth Proportional to 111,920.60, 167,775.36 and 55,707.56

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Solution

The fourth proportional to 111,920.60, 167,775.36 and 55,707.56 is: 83,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.60 : 167,775.36 = 55,707.56 : x
  2. Step 2: Convert to fraction form
    111,920.60/167,775.36 = 55,707.56/x
  3. Step 3: Cross multiply
    111,920.60x = 167,775.36 × 55,707.56
  4. Step 4: Simplify right side
    111,920.60x = 9,346,355,094.84
  5. Step 5: Solve for x
    x = 9,346,355,094.84/111,920.60
  6. Step 6: Final answer
    x = 83,508.80

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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.