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Finding the Fourth Proportional to 172,936.89, 238,706.21 and 101,340.18

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Solution

The fourth proportional to 172,936.89, 238,706.21 and 101,340.18 is: 139,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,936.89 : 238,706.21 = 101,340.18 : x
  2. Step 2: Convert to fraction form
    172,936.89/238,706.21 = 101,340.18/x
  3. Step 3: Cross multiply
    172,936.89x = 238,706.21 × 101,340.18
  4. Step 4: Simplify right side
    172,936.89x = 24,190,529,781.82
  5. Step 5: Solve for x
    x = 24,190,529,781.82/172,936.89
  6. Step 6: Final answer
    x = 139,880.68

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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.