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Finding the Fourth Proportional to 55,530, 76,632.51 and 30,380.04

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Solution

The fourth proportional to 55,530, 76,632.51 and 30,380.04 is: 41,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,530 : 76,632.51 = 30,380.04 : x
  2. Step 2: Convert to fraction form
    55,530/76,632.51 = 30,380.04/x
  3. Step 3: Cross multiply
    55,530x = 76,632.51 × 30,380.04
  4. Step 4: Simplify right side
    55,530x = 2,328,098,719.10
  5. Step 5: Solve for x
    x = 2,328,098,719.10/55,530
  6. Step 6: Final answer
    x = 41,925.06

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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.