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Finding the Fourth Proportional to 78,791.15, 118,168.70 and 22,630.81

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Solution

The fourth proportional to 78,791.15, 118,168.70 and 22,630.81 is: 33,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,791.15 : 118,168.70 = 22,630.81 : x
  2. Step 2: Convert to fraction form
    78,791.15/118,168.70 = 22,630.81/x
  3. Step 3: Cross multiply
    78,791.15x = 118,168.70 × 22,630.81
  4. Step 4: Simplify right side
    78,791.15x = 2,674,253,397.65
  5. Step 5: Solve for x
    x = 2,674,253,397.65/78,791.15
  6. Step 6: Final answer
    x = 33,941.04

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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.