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Finding the Fourth Proportional to 124,652.92, 172,021.02 and 68,064.34

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Solution

The fourth proportional to 124,652.92, 172,021.02 and 68,064.34 is: 93,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,652.92 : 172,021.02 = 68,064.34 : x
  2. Step 2: Convert to fraction form
    124,652.92/172,021.02 = 68,064.34/x
  3. Step 3: Cross multiply
    124,652.92x = 172,021.02 × 68,064.34
  4. Step 4: Simplify right side
    124,652.92x = 11,708,497,192.43
  5. Step 5: Solve for x
    x = 11,708,497,192.43/124,652.92
  6. Step 6: Final answer
    x = 93,928.78

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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.