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Finding the Fourth Proportional to 71,995.34, 108,017.31 and 45,361.32

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Solution

The fourth proportional to 71,995.34, 108,017.31 and 45,361.32 is: 68,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,995.34 : 108,017.31 = 45,361.32 : x
  2. Step 2: Convert to fraction form
    71,995.34/108,017.31 = 45,361.32/x
  3. Step 3: Cross multiply
    71,995.34x = 108,017.31 × 45,361.32
  4. Step 4: Simplify right side
    71,995.34x = 4,899,807,764.45
  5. Step 5: Solve for x
    x = 4,899,807,764.45/71,995.34
  6. Step 6: Final answer
    x = 68,057.30

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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.