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Finding the Fourth Proportional to 111,475.70, 167,087.75 and 55,355.86

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Solution

The fourth proportional to 111,475.70, 167,087.75 and 55,355.86 is: 82,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,475.70 : 167,087.75 = 55,355.86 : x
  2. Step 2: Convert to fraction form
    111,475.70/167,087.75 = 55,355.86/x
  3. Step 3: Cross multiply
    111,475.70x = 167,087.75 × 55,355.86
  4. Step 4: Simplify right side
    111,475.70x = 9,249,286,096.72
  5. Step 5: Solve for x
    x = 9,249,286,096.72/111,475.70
  6. Step 6: Final answer
    x = 82,971.32

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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.