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Finding the Fourth Proportional to 111,917.90, 167,906.55 and 48,710.90

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Solution

The fourth proportional to 111,917.90, 167,906.55 and 48,710.90 is: 73,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,917.90 : 167,906.55 = 48,710.90 : x
  2. Step 2: Convert to fraction form
    111,917.90/167,906.55 = 48,710.90/x
  3. Step 3: Cross multiply
    111,917.90x = 167,906.55 × 48,710.90
  4. Step 4: Simplify right side
    111,917.90x = 8,178,879,166.40
  5. Step 5: Solve for x
    x = 8,178,879,166.40/111,917.90
  6. Step 6: Final answer
    x = 73,079.28

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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.