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Finding the Fourth Proportional to 57,087.64, 85,639.66 and 17,647.83

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Solution

The fourth proportional to 57,087.64, 85,639.66 and 17,647.83 is: 26,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087.64 : 85,639.66 = 17,647.83 : x
  2. Step 2: Convert to fraction form
    57,087.64/85,639.66 = 17,647.83/x
  3. Step 3: Cross multiply
    57,087.64x = 85,639.66 × 17,647.83
  4. Step 4: Simplify right side
    57,087.64x = 1,511,354,183.00
  5. Step 5: Solve for x
    x = 1,511,354,183.00/57,087.64
  6. Step 6: Final answer
    x = 26,474.28

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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.