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Finding the Fourth Proportional to 124,212.30, 171,411.93 and 67,623.54

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Solution

The fourth proportional to 124,212.30, 171,411.93 and 67,623.54 is: 93,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,212.30 : 171,411.93 = 67,623.54 : x
  2. Step 2: Convert to fraction form
    124,212.30/171,411.93 = 67,623.54/x
  3. Step 3: Cross multiply
    124,212.30x = 171,411.93 × 67,623.54
  4. Step 4: Simplify right side
    124,212.30x = 11,591,481,504.83
  5. Step 5: Solve for x
    x = 11,591,481,504.83/124,212.30
  6. Step 6: Final answer
    x = 93,319.92

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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.