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Finding the Fourth Proportional to 125,647.65, 173,434.17 and 80,447.37

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Solution

The fourth proportional to 125,647.65, 173,434.17 and 80,447.37 is: 111,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,647.65 : 173,434.17 = 80,447.37 : x
  2. Step 2: Convert to fraction form
    125,647.65/173,434.17 = 80,447.37/x
  3. Step 3: Cross multiply
    125,647.65x = 173,434.17 × 80,447.37
  4. Step 4: Simplify right side
    125,647.65x = 13,952,322,844.63
  5. Step 5: Solve for x
    x = 13,952,322,844.63/125,647.65
  6. Step 6: Final answer
    x = 111,043.25

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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.