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Finding the Fourth Proportional to 172,800.75, 259,215.98 and 48,141.75

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Solution

The fourth proportional to 172,800.75, 259,215.98 and 48,141.75 is: 72,216.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,800.75 : 259,215.98 = 48,141.75 : x
  2. Step 2: Convert to fraction form
    172,800.75/259,215.98 = 48,141.75/x
  3. Step 3: Cross multiply
    172,800.75x = 259,215.98 × 48,141.75
  4. Step 4: Simplify right side
    172,800.75x = 12,479,110,664.46
  5. Step 5: Solve for x
    x = 12,479,110,664.46/172,800.75
  6. Step 6: Final answer
    x = 72,216.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.