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Finding the Fourth Proportional to 125,294.82, 172,906.83 and 68,707.41

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Solution

The fourth proportional to 125,294.82, 172,906.83 and 68,707.41 is: 94,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,294.82 : 172,906.83 = 68,707.41 : x
  2. Step 2: Convert to fraction form
    125,294.82/172,906.83 = 68,707.41/x
  3. Step 3: Cross multiply
    125,294.82x = 172,906.83 × 68,707.41
  4. Step 4: Simplify right side
    125,294.82x = 11,879,980,460.61
  5. Step 5: Solve for x
    x = 11,879,980,460.61/125,294.82
  6. Step 6: Final answer
    x = 94,816.21

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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.