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Finding the Fourth Proportional to 54,527.80, 81,791.70 and 45,779.80

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Solution

The fourth proportional to 54,527.80, 81,791.70 and 45,779.80 is: 68,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,527.80 : 81,791.70 = 45,779.80 : x
  2. Step 2: Convert to fraction form
    54,527.80/81,791.70 = 45,779.80/x
  3. Step 3: Cross multiply
    54,527.80x = 81,791.70 × 45,779.80
  4. Step 4: Simplify right side
    54,527.80x = 3,744,407,667.66
  5. Step 5: Solve for x
    x = 3,744,407,667.66/54,527.80
  6. Step 6: Final answer
    x = 68,669.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.