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Finding the Fourth Proportional to 133,268.32, 183,905.29 and 72,838.48

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Solution

The fourth proportional to 133,268.32, 183,905.29 and 72,838.48 is: 100,514.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,268.32 : 183,905.29 = 72,838.48 : x
  2. Step 2: Convert to fraction form
    133,268.32/183,905.29 = 72,838.48/x
  3. Step 3: Cross multiply
    133,268.32x = 183,905.29 × 72,838.48
  4. Step 4: Simplify right side
    133,268.32x = 13,395,381,787.56
  5. Step 5: Solve for x
    x = 13,395,381,787.56/133,268.32
  6. Step 6: Final answer
    x = 100,514.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.