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Finding the Fourth Proportional to 132,618.32, 183,015.62 and 72,190.70

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Solution

The fourth proportional to 132,618.32, 183,015.62 and 72,190.70 is: 99,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,618.32 : 183,015.62 = 72,190.70 : x
  2. Step 2: Convert to fraction form
    132,618.32/183,015.62 = 72,190.70/x
  3. Step 3: Cross multiply
    132,618.32x = 183,015.62 × 72,190.70
  4. Step 4: Simplify right side
    132,618.32x = 13,212,024,442.70
  5. Step 5: Solve for x
    x = 13,212,024,442.70/132,618.32
  6. Step 6: Final answer
    x = 99,624.43

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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.