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Finding the Fourth Proportional to 57,724.60, 86,586.90 and 53,447.80

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Solution

The fourth proportional to 57,724.60, 86,586.90 and 53,447.80 is: 80,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,724.60 : 86,586.90 = 53,447.80 : x
  2. Step 2: Convert to fraction form
    57,724.60/86,586.90 = 53,447.80/x
  3. Step 3: Cross multiply
    57,724.60x = 86,586.90 × 53,447.80
  4. Step 4: Simplify right side
    57,724.60x = 4,627,879,313.82
  5. Step 5: Solve for x
    x = 4,627,879,313.82/57,724.60
  6. Step 6: Final answer
    x = 80,171.70

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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.