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Finding the Fourth Proportional to 66,583.32, 91,881.21 and 36,362.64

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Solution

The fourth proportional to 66,583.32, 91,881.21 and 36,362.64 is: 50,178.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,583.32 : 91,881.21 = 36,362.64 : x
  2. Step 2: Convert to fraction form
    66,583.32/91,881.21 = 36,362.64/x
  3. Step 3: Cross multiply
    66,583.32x = 91,881.21 × 36,362.64
  4. Step 4: Simplify right side
    66,583.32x = 3,341,043,361.99
  5. Step 5: Solve for x
    x = 3,341,043,361.99/66,583.32
  6. Step 6: Final answer
    x = 50,178.38

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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.