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Finding the Fourth Proportional to 125,058.84, 172,580.76 and 68,469.72

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Solution

The fourth proportional to 125,058.84, 172,580.76 and 68,469.72 is: 94,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,058.84 : 172,580.76 = 68,469.72 : x
  2. Step 2: Convert to fraction form
    125,058.84/172,580.76 = 68,469.72/x
  3. Step 3: Cross multiply
    125,058.84x = 172,580.76 × 68,469.72
  4. Step 4: Simplify right side
    125,058.84x = 11,816,556,314.59
  5. Step 5: Solve for x
    x = 11,816,556,314.59/125,058.84
  6. Step 6: Final answer
    x = 94,487.97

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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.