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Finding the Fourth Proportional to 125,648.54, 173,396.32 and 68,287.86

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Solution

The fourth proportional to 125,648.54, 173,396.32 and 68,287.86 is: 94,237.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,648.54 : 173,396.32 = 68,287.86 : x
  2. Step 2: Convert to fraction form
    125,648.54/173,396.32 = 68,287.86/x
  3. Step 3: Cross multiply
    125,648.54x = 173,396.32 × 68,287.86
  4. Step 4: Simplify right side
    125,648.54x = 11,840,863,838.07
  5. Step 5: Solve for x
    x = 11,840,863,838.07/125,648.54
  6. Step 6: Final answer
    x = 94,237.97

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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.