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Finding the Fourth Proportional to 57,069.60, 85,616.07 and 19,624.80

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Solution

The fourth proportional to 57,069.60, 85,616.07 and 19,624.80 is: 29,441.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,069.60 : 85,616.07 = 19,624.80 : x
  2. Step 2: Convert to fraction form
    57,069.60/85,616.07 = 19,624.80/x
  3. Step 3: Cross multiply
    57,069.60x = 85,616.07 × 19,624.80
  4. Step 4: Simplify right side
    57,069.60x = 1,680,198,571.60
  5. Step 5: Solve for x
    x = 1,680,198,571.60/57,069.60
  6. Step 6: Final answer
    x = 29,441.22

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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.