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Finding the Fourth Proportional to 125,407.39, 173,064.32 and 68,824.03

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Solution

The fourth proportional to 125,407.39, 173,064.32 and 68,824.03 is: 94,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,407.39 : 173,064.32 = 68,824.03 : x
  2. Step 2: Convert to fraction form
    125,407.39/173,064.32 = 68,824.03/x
  3. Step 3: Cross multiply
    125,407.39x = 173,064.32 × 68,824.03
  4. Step 4: Simplify right side
    125,407.39x = 11,910,983,951.61
  5. Step 5: Solve for x
    x = 11,910,983,951.61/125,407.39
  6. Step 6: Final answer
    x = 94,978.33

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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.