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Finding the Fourth Proportional to 104,137.54, 143,706.89 and 61,696.08

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Solution

The fourth proportional to 104,137.54, 143,706.89 and 61,696.08 is: 85,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,137.54 : 143,706.89 = 61,696.08 : x
  2. Step 2: Convert to fraction form
    104,137.54/143,706.89 = 61,696.08/x
  3. Step 3: Cross multiply
    104,137.54x = 143,706.89 × 61,696.08
  4. Step 4: Simplify right side
    104,137.54x = 8,866,151,936.23
  5. Step 5: Solve for x
    x = 8,866,151,936.23/104,137.54
  6. Step 6: Final answer
    x = 85,138.87

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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.