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Finding the Fourth Proportional to 54,791.52, 81,790.90 and 48,148.56

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Solution

The fourth proportional to 54,791.52, 81,790.90 and 48,148.56 is: 71,874.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,791.52 : 81,790.90 = 48,148.56 : x
  2. Step 2: Convert to fraction form
    54,791.52/81,790.90 = 48,148.56/x
  3. Step 3: Cross multiply
    54,791.52x = 81,790.90 × 48,148.56
  4. Step 4: Simplify right side
    54,791.52x = 3,938,114,056.10
  5. Step 5: Solve for x
    x = 3,938,114,056.10/54,791.52
  6. Step 6: Final answer
    x = 71,874.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.