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Finding the Fourth Proportional to 125,993.92, 173,793.44 and 74,972.16

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Solution

The fourth proportional to 125,993.92, 173,793.44 and 74,972.16 is: 103,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,993.92 : 173,793.44 = 74,972.16 : x
  2. Step 2: Convert to fraction form
    125,993.92/173,793.44 = 74,972.16/x
  3. Step 3: Cross multiply
    125,993.92x = 173,793.44 × 74,972.16
  4. Step 4: Simplify right side
    125,993.92x = 13,029,669,590.63
  5. Step 5: Solve for x
    x = 13,029,669,590.63/125,993.92
  6. Step 6: Final answer
    x = 103,415.07

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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.