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Finding the Fourth Proportional to 124,601.78, 171,950.42 and 68,013.16

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Solution

The fourth proportional to 124,601.78, 171,950.42 and 68,013.16 is: 93,858.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,601.78 : 171,950.42 = 68,013.16 : x
  2. Step 2: Convert to fraction form
    124,601.78/171,950.42 = 68,013.16/x
  3. Step 3: Cross multiply
    124,601.78x = 171,950.42 × 68,013.16
  4. Step 4: Simplify right side
    124,601.78x = 11,694,890,657.59
  5. Step 5: Solve for x
    x = 11,694,890,657.59/124,601.78
  6. Step 6: Final answer
    x = 93,858.13

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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.