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Finding the Fourth Proportional to 57,435.75, 86,153.76 and 17,993.88

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Solution

The fourth proportional to 57,435.75, 86,153.76 and 17,993.88 is: 26,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,435.75 : 86,153.76 = 17,993.88 : x
  2. Step 2: Convert to fraction form
    57,435.75/86,153.76 = 17,993.88/x
  3. Step 3: Cross multiply
    57,435.75x = 86,153.76 × 17,993.88
  4. Step 4: Simplify right side
    57,435.75x = 1,550,240,418.99
  5. Step 5: Solve for x
    x = 1,550,240,418.99/57,435.75
  6. Step 6: Final answer
    x = 26,990.86

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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.