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Finding the Fourth Proportional to 172,913.67, 259,397.33 and 73,074.29

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Solution

The fourth proportional to 172,913.67, 259,397.33 and 73,074.29 is: 109,622.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,913.67 : 259,397.33 = 73,074.29 : x
  2. Step 2: Convert to fraction form
    172,913.67/259,397.33 = 73,074.29/x
  3. Step 3: Cross multiply
    172,913.67x = 259,397.33 × 73,074.29
  4. Step 4: Simplify right side
    172,913.67x = 18,955,274,055.29
  5. Step 5: Solve for x
    x = 18,955,274,055.29/172,913.67
  6. Step 6: Final answer
    x = 109,622.76

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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.