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Finding the Fourth Proportional to 57,387.78, 79,195.07 and 31,893.34

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Solution

The fourth proportional to 57,387.78, 79,195.07 and 31,893.34 is: 44,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,387.78 : 79,195.07 = 31,893.34 : x
  2. Step 2: Convert to fraction form
    57,387.78/79,195.07 = 31,893.34/x
  3. Step 3: Cross multiply
    57,387.78x = 79,195.07 × 31,893.34
  4. Step 4: Simplify right side
    57,387.78x = 2,525,795,293.83
  5. Step 5: Solve for x
    x = 2,525,795,293.83/57,387.78
  6. Step 6: Final answer
    x = 44,012.77

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1.5x scale

Why These Related Problems?

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