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Finding the Fourth Proportional to 125,209.92, 172,790.34 and 68,623.32

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Solution

The fourth proportional to 125,209.92, 172,790.34 and 68,623.32 is: 94,700.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,209.92 : 172,790.34 = 68,623.32 : x
  2. Step 2: Convert to fraction form
    125,209.92/172,790.34 = 68,623.32/x
  3. Step 3: Cross multiply
    125,209.92x = 172,790.34 × 68,623.32
  4. Step 4: Simplify right side
    125,209.92x = 11,857,446,794.73
  5. Step 5: Solve for x
    x = 11,857,446,794.73/125,209.92
  6. Step 6: Final answer
    x = 94,700.54

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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.