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Finding the Fourth Proportional to 57,969.97, 86,949.48 and 18,520.13

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Solution

The fourth proportional to 57,969.97, 86,949.48 and 18,520.13 is: 27,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,969.97 : 86,949.48 = 18,520.13 : x
  2. Step 2: Convert to fraction form
    57,969.97/86,949.48 = 18,520.13/x
  3. Step 3: Cross multiply
    57,969.97x = 86,949.48 × 18,520.13
  4. Step 4: Simplify right side
    57,969.97x = 1,610,315,673.03
  5. Step 5: Solve for x
    x = 1,610,315,673.03/57,969.97
  6. Step 6: Final answer
    x = 27,778.45

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1.5x scale

Why These Related Problems?

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