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Finding the Fourth Proportional to 103,692.45, 155,538.68 and 33,578.85

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Solution

The fourth proportional to 103,692.45, 155,538.68 and 33,578.85 is: 50,368.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.45 : 155,538.68 = 33,578.85 : x
  2. Step 2: Convert to fraction form
    103,692.45/155,538.68 = 33,578.85/x
  3. Step 3: Cross multiply
    103,692.45x = 155,538.68 × 33,578.85
  4. Step 4: Simplify right side
    103,692.45x = 5,222,809,837.02
  5. Step 5: Solve for x
    x = 5,222,809,837.02/103,692.45
  6. Step 6: Final answer
    x = 50,368.28

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1.5x scale

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.