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Finding the Fourth Proportional to 57,573.81, 86,382.86 and 20,137.77

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Solution

The fourth proportional to 57,573.81, 86,382.86 and 20,137.77 is: 30,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,573.81 : 86,382.86 = 20,137.77 : x
  2. Step 2: Convert to fraction form
    57,573.81/86,382.86 = 20,137.77/x
  3. Step 3: Cross multiply
    57,573.81x = 86,382.86 × 20,137.77
  4. Step 4: Simplify right side
    57,573.81x = 1,739,558,065.93
  5. Step 5: Solve for x
    x = 1,739,558,065.93/57,573.81
  6. Step 6: Final answer
    x = 30,214.40

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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.