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Finding the Fourth Proportional to 125,649.65, 173,396.54 and 68,288.96

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Solution

The fourth proportional to 125,649.65, 173,396.54 and 68,288.96 is: 94,238.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,649.65 : 173,396.54 = 68,288.96 : x
  2. Step 2: Convert to fraction form
    125,649.65/173,396.54 = 68,288.96/x
  3. Step 3: Cross multiply
    125,649.65x = 173,396.54 × 68,288.96
  4. Step 4: Simplify right side
    125,649.65x = 11,841,068,687.94
  5. Step 5: Solve for x
    x = 11,841,068,687.94/125,649.65
  6. Step 6: Final answer
    x = 94,238.78

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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.