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Finding the Fourth Proportional to 71,889.67, 99,207.80 and 41,692.51

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Solution

The fourth proportional to 71,889.67, 99,207.80 and 41,692.51 is: 57,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,889.67 : 99,207.80 = 41,692.51 : x
  2. Step 2: Convert to fraction form
    71,889.67/99,207.80 = 41,692.51/x
  3. Step 3: Cross multiply
    71,889.67x = 99,207.80 × 41,692.51
  4. Step 4: Simplify right side
    71,889.67x = 4,136,222,193.58
  5. Step 5: Solve for x
    x = 4,136,222,193.58/71,889.67
  6. Step 6: Final answer
    x = 57,535.70

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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.