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Finding the Fourth Proportional to 125,791.28, 173,581.44 and 74,100.16

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Solution

The fourth proportional to 125,791.28, 173,581.44 and 74,100.16 is: 102,252.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,791.28 : 173,581.44 = 74,100.16 : x
  2. Step 2: Convert to fraction form
    125,791.28/173,581.44 = 74,100.16/x
  3. Step 3: Cross multiply
    125,791.28x = 173,581.44 × 74,100.16
  4. Step 4: Simplify right side
    125,791.28x = 12,862,412,477.03
  5. Step 5: Solve for x
    x = 12,862,412,477.03/125,791.28
  6. Step 6: Final answer
    x = 102,252.02

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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.