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Finding the Fourth Proportional to 99,692.40, 149,927.40 and 89,583.60

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Solution

The fourth proportional to 99,692.40, 149,927.40 and 89,583.60 is: 134,724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,692.40 : 149,927.40 = 89,583.60 : x
  2. Step 2: Convert to fraction form
    99,692.40/149,927.40 = 89,583.60/x
  3. Step 3: Cross multiply
    99,692.40x = 149,927.40 × 89,583.60
  4. Step 4: Simplify right side
    99,692.40x = 13,431,036,230.64
  5. Step 5: Solve for x
    x = 13,431,036,230.64/99,692.40
  6. Step 6: Final answer
    x = 134,724.78

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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.