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Finding the Fourth Proportional to 72,361.56, 99,959.58 and 54,593.40

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Solution

The fourth proportional to 72,361.56, 99,959.58 and 54,593.40 is: 75,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361.56 : 99,959.58 = 54,593.40 : x
  2. Step 2: Convert to fraction form
    72,361.56/99,959.58 = 54,593.40/x
  3. Step 3: Cross multiply
    72,361.56x = 99,959.58 × 54,593.40
  4. Step 4: Simplify right side
    72,361.56x = 5,457,133,334.77
  5. Step 5: Solve for x
    x = 5,457,133,334.77/72,361.56
  6. Step 6: Final answer
    x = 75,414.81

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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.