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Finding the Fourth Proportional to 124,609.92, 171,965.76 and 68,025.60

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Solution

The fourth proportional to 124,609.92, 171,965.76 and 68,025.60 is: 93,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,609.92 : 171,965.76 = 68,025.60 : x
  2. Step 2: Convert to fraction form
    124,609.92/171,965.76 = 68,025.60/x
  3. Step 3: Cross multiply
    124,609.92x = 171,965.76 × 68,025.60
  4. Step 4: Simplify right side
    124,609.92x = 11,698,074,003.46
  5. Step 5: Solve for x
    x = 11,698,074,003.46/124,609.92
  6. Step 6: Final answer
    x = 93,877.55

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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.