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Finding the Fourth Proportional to 172,872.50, 259,352.51 and 48,213.50

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Solution

The fourth proportional to 172,872.50, 259,352.51 and 48,213.50 is: 72,332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,872.50 : 259,352.51 = 48,213.50 : x
  2. Step 2: Convert to fraction form
    172,872.50/259,352.51 = 48,213.50/x
  3. Step 3: Cross multiply
    172,872.50x = 259,352.51 × 48,213.50
  4. Step 4: Simplify right side
    172,872.50x = 12,504,292,240.89
  5. Step 5: Solve for x
    x = 12,504,292,240.89/172,872.50
  6. Step 6: Final answer
    x = 72,332.45

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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.