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Finding the Fourth Proportional to 101,961.88, 152,696.72 and 61,318.51

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Solution

The fourth proportional to 101,961.88, 152,696.72 and 61,318.51 is: 91,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,961.88 : 152,696.72 = 61,318.51 : x
  2. Step 2: Convert to fraction form
    101,961.88/152,696.72 = 61,318.51/x
  3. Step 3: Cross multiply
    101,961.88x = 152,696.72 × 61,318.51
  4. Step 4: Simplify right side
    101,961.88x = 9,363,135,352.29
  5. Step 5: Solve for x
    x = 9,363,135,352.29/101,961.88
  6. Step 6: Final answer
    x = 91,829.76

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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.