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Finding the Fourth Proportional to 45,692.84, 68,509.90 and 19,057.21

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Solution

The fourth proportional to 45,692.84, 68,509.90 and 19,057.21 is: 28,573.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,692.84 : 68,509.90 = 19,057.21 : x
  2. Step 2: Convert to fraction form
    45,692.84/68,509.90 = 19,057.21/x
  3. Step 3: Cross multiply
    45,692.84x = 68,509.90 × 19,057.21
  4. Step 4: Simplify right side
    45,692.84x = 1,305,607,403.93
  5. Step 5: Solve for x
    x = 1,305,607,403.93/45,692.84
  6. Step 6: Final answer
    x = 28,573.56

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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.