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Finding the Fourth Proportional to 125,324.72, 172,952.52 and 68,736.32

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Solution

The fourth proportional to 125,324.72, 172,952.52 and 68,736.32 is: 94,858.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,324.72 : 172,952.52 = 68,736.32 : x
  2. Step 2: Convert to fraction form
    125,324.72/172,952.52 = 68,736.32/x
  3. Step 3: Cross multiply
    125,324.72x = 172,952.52 × 68,736.32
  4. Step 4: Simplify right side
    125,324.72x = 11,888,119,759.53
  5. Step 5: Solve for x
    x = 11,888,119,759.53/125,324.72
  6. Step 6: Final answer
    x = 94,858.54

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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.