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Finding the Fourth Proportional to 57,278.60, 85,917.90 and 53,998.10

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Solution

The fourth proportional to 57,278.60, 85,917.90 and 53,998.10 is: 80,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,278.60 : 85,917.90 = 53,998.10 : x
  2. Step 2: Convert to fraction form
    57,278.60/85,917.90 = 53,998.10/x
  3. Step 3: Cross multiply
    57,278.60x = 85,917.90 × 53,998.10
  4. Step 4: Simplify right side
    57,278.60x = 4,639,403,355.99
  5. Step 5: Solve for x
    x = 4,639,403,355.99/57,278.60
  6. Step 6: Final answer
    x = 80,997.15

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Similar ratio
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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.