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Finding the Fourth Proportional to 69,907.97, 96,475.41 and 39,692.31

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Solution

The fourth proportional to 69,907.97, 96,475.41 and 39,692.31 is: 54,776.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.97 : 96,475.41 = 39,692.31 : x
  2. Step 2: Convert to fraction form
    69,907.97/96,475.41 = 39,692.31/x
  3. Step 3: Cross multiply
    69,907.97x = 96,475.41 × 39,692.31
  4. Step 4: Simplify right side
    69,907.97x = 3,829,331,881.10
  5. Step 5: Solve for x
    x = 3,829,331,881.10/69,907.97
  6. Step 6: Final answer
    x = 54,776.76

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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.