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Finding the Fourth Proportional to 124,954.54, 172,441.56 and 68,365.90

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Solution

The fourth proportional to 124,954.54, 172,441.56 and 68,365.90 is: 94,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,954.54 : 172,441.56 = 68,365.90 : x
  2. Step 2: Convert to fraction form
    124,954.54/172,441.56 = 68,365.90/x
  3. Step 3: Cross multiply
    124,954.54x = 172,441.56 × 68,365.90
  4. Step 4: Simplify right side
    124,954.54x = 11,789,122,446.80
  5. Step 5: Solve for x
    x = 11,789,122,446.80/124,954.54
  6. Step 6: Final answer
    x = 94,347.29

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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.