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Finding the Fourth Proportional to 172,172.46, 258,110.78 and 59,838.09

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Solution

The fourth proportional to 172,172.46, 258,110.78 and 59,838.09 is: 89,705.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,172.46 : 258,110.78 = 59,838.09 : x
  2. Step 2: Convert to fraction form
    172,172.46/258,110.78 = 59,838.09/x
  3. Step 3: Cross multiply
    172,172.46x = 258,110.78 × 59,838.09
  4. Step 4: Simplify right side
    172,172.46x = 15,444,854,816.50
  5. Step 5: Solve for x
    x = 15,444,854,816.50/172,172.46
  6. Step 6: Final answer
    x = 89,705.72

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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.