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Finding the Fourth Proportional to 124,846.16, 172,288.42 and 68,257.53

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Solution

The fourth proportional to 124,846.16, 172,288.42 and 68,257.53 is: 94,195.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,846.16 : 172,288.42 = 68,257.53 : x
  2. Step 2: Convert to fraction form
    124,846.16/172,288.42 = 68,257.53/x
  3. Step 3: Cross multiply
    124,846.16x = 172,288.42 × 68,257.53
  4. Step 4: Simplify right side
    124,846.16x = 11,759,981,826.16
  5. Step 5: Solve for x
    x = 11,759,981,826.16/124,846.16
  6. Step 6: Final answer
    x = 94,195.79

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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.