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Finding the Fourth Proportional to 215,802.15, 323,796.51 and 115,845.62

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Solution

The fourth proportional to 215,802.15, 323,796.51 and 115,845.62 is: 173,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,802.15 : 323,796.51 = 115,845.62 : x
  2. Step 2: Convert to fraction form
    215,802.15/323,796.51 = 115,845.62/x
  3. Step 3: Cross multiply
    215,802.15x = 323,796.51 × 115,845.62
  4. Step 4: Simplify right side
    215,802.15x = 37,510,407,072.30
  5. Step 5: Solve for x
    x = 37,510,407,072.30/215,802.15
  6. Step 6: Final answer
    x = 173,818.51

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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.