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Finding the Fourth Proportional to 61,179.96, 84,338.97 and 43,243.32

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Solution

The fourth proportional to 61,179.96, 84,338.97 and 43,243.32 is: 59,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,179.96 : 84,338.97 = 43,243.32 : x
  2. Step 2: Convert to fraction form
    61,179.96/84,338.97 = 43,243.32/x
  3. Step 3: Cross multiply
    61,179.96x = 84,338.97 × 43,243.32
  4. Step 4: Simplify right side
    61,179.96x = 3,647,097,068.18
  5. Step 5: Solve for x
    x = 3,647,097,068.18/61,179.96
  6. Step 6: Final answer
    x = 59,612.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.