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Finding the Fourth Proportional to 57,120.59, 85,730.09 and 27,563.28

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Solution

The fourth proportional to 57,120.59, 85,730.09 and 27,563.28 is: 41,368.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.59 : 85,730.09 = 27,563.28 : x
  2. Step 2: Convert to fraction form
    57,120.59/85,730.09 = 27,563.28/x
  3. Step 3: Cross multiply
    57,120.59x = 85,730.09 × 27,563.28
  4. Step 4: Simplify right side
    57,120.59x = 2,363,002,544.00
  5. Step 5: Solve for x
    x = 2,363,002,544.00/57,120.59
  6. Step 6: Final answer
    x = 41,368.67

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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.