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Finding the Fourth Proportional to 351,692.83, 527,539.91 and 85,453.57

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Solution

The fourth proportional to 351,692.83, 527,539.91 and 85,453.57 is: 128,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,692.83 : 527,539.91 = 85,453.57 : x
  2. Step 2: Convert to fraction form
    351,692.83/527,539.91 = 85,453.57/x
  3. Step 3: Cross multiply
    351,692.83x = 527,539.91 × 85,453.57
  4. Step 4: Simplify right side
    351,692.83x = 45,080,169,839.01
  5. Step 5: Solve for x
    x = 45,080,169,839.01/351,692.83
  6. Step 6: Final answer
    x = 128,180.52

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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.