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Finding the Fourth Proportional to 57,205.70, 85,808.55 and 53,998.10

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Solution

The fourth proportional to 57,205.70, 85,808.55 and 53,998.10 is: 80,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,205.70 : 85,808.55 = 53,998.10 : x
  2. Step 2: Convert to fraction form
    57,205.70/85,808.55 = 53,998.10/x
  3. Step 3: Cross multiply
    57,205.70x = 85,808.55 × 53,998.10
  4. Step 4: Simplify right side
    57,205.70x = 4,633,498,663.76
  5. Step 5: Solve for x
    x = 4,633,498,663.76/57,205.70
  6. Step 6: Final answer
    x = 80,997.15

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Double scale
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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.