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Finding the Fourth Proportional to 111,921.60, 167,776.86 and 55,708.56

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Solution

The fourth proportional to 111,921.60, 167,776.86 and 55,708.56 is: 83,510.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,921.60 : 167,776.86 = 55,708.56 : x
  2. Step 2: Convert to fraction form
    111,921.60/167,776.86 = 55,708.56/x
  3. Step 3: Cross multiply
    111,921.60x = 167,776.86 × 55,708.56
  4. Step 4: Simplify right side
    111,921.60x = 9,346,607,271.92
  5. Step 5: Solve for x
    x = 9,346,607,271.92/111,921.60
  6. Step 6: Final answer
    x = 83,510.31

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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.