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Finding the Fourth Proportional to 125,399.25, 173,063.13 and 71,674.05

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Solution

The fourth proportional to 125,399.25, 173,063.13 and 71,674.05 is: 98,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,399.25 : 173,063.13 = 71,674.05 : x
  2. Step 2: Convert to fraction form
    125,399.25/173,063.13 = 71,674.05/x
  3. Step 3: Cross multiply
    125,399.25x = 173,063.13 × 71,674.05
  4. Step 4: Simplify right side
    125,399.25x = 12,404,135,432.78
  5. Step 5: Solve for x
    x = 12,404,135,432.78/125,399.25
  6. Step 6: Final answer
    x = 98,917.14

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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.