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Finding the Fourth Proportional to 125,643.29, 188,435.73 and 36,872.96

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Solution

The fourth proportional to 125,643.29, 188,435.73 and 36,872.96 is: 55,300.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.29 : 188,435.73 = 36,872.96 : x
  2. Step 2: Convert to fraction form
    125,643.29/188,435.73 = 36,872.96/x
  3. Step 3: Cross multiply
    125,643.29x = 188,435.73 × 36,872.96
  4. Step 4: Simplify right side
    125,643.29x = 6,948,183,134.86
  5. Step 5: Solve for x
    x = 6,948,183,134.86/125,643.29
  6. Step 6: Final answer
    x = 55,300.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.