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Finding the Fourth Proportional to 123,916.16, 171,005.92 and 67,327.04

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Solution

The fourth proportional to 123,916.16, 171,005.92 and 67,327.04 is: 92,912.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,916.16 : 171,005.92 = 67,327.04 : x
  2. Step 2: Convert to fraction form
    123,916.16/171,005.92 = 67,327.04/x
  3. Step 3: Cross multiply
    123,916.16x = 171,005.92 × 67,327.04
  4. Step 4: Simplify right side
    123,916.16x = 11,513,322,416.08
  5. Step 5: Solve for x
    x = 11,513,322,416.08/123,916.16
  6. Step 6: Final answer
    x = 92,912.19

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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.